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Munemasa Akihiro  宗政 昭弘

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… Alternative Names

MUNEMASA Akihiro  宗政 昭弘

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Researcher Number 50219862
Other IDs
External Links
Affiliation (Current) 2025: 東北大学, 情報科学研究科, 教授
Affiliation (based on the past Project Information) *help 2012 – 2025: 東北大学, 情報科学研究科, 教授
2017: 東北大学, 大学院情報科学研究科, 教授
2013 – 2015: 東北大学, 大学院情報科学研究科, 教授
2007 – 2011: Tohoku University, 大学院・情報科学研究科, Professor
2009: 東北大学, 情報科学研究科, 教授 … More
2006 – 2007: 東北大学, 情報科学研究科, 教授
2006: Tohoku University, Graduate School of Information Sciences, Professor, 大学院情報科学研究科, 教授
2006: 東北大学, 大学院情報科学研究院, 教授
2003 – 2005: TOHOKU UNIVERSITY, GRADUATE SCHOOL OF INFORMATION SCIENCES, PROFESSOR, 大学院・情報科学研究科, 教授
2003 – 2004: 東北大学, 情報科学研究科, 教授
2002: 九州大学, 数理学研究科, 助教授
2001 – 2002: 九州大学, 数理学研究院, 助教授
2000 – 2002: Kyushu U.Facuety of Math, Assoc.Prof., 大学院・数理学研究院, 助教授
2001: Kyushu Univ., Graduate School of Math., Assoc. Professor, 大学院・数理研究院, 助教授
2001: Kanazawa University, Graduate School of Mathematics Associate Professor, 大学院・理数学研究院, 助教授
1999 – 2000: Kyushu University, Associate Professor, 数理学研究科, 助教授
1994 – 2000: 九州大学, 大学院・数理学研究科, 助教授
1998: 九州大学, 大学院数理学研究科, 助教授
1994: 九州大学, 大学院数理学研究科, 助教授
1992 – 1993: 九州大学, 理学部, 助手 Less
Review Section/Research Field
Principal Investigator
Algebra / Basic Section 11010:Algebra-related / Algebra / Basic Section 12030:Basic mathematics-related / Clinical psychology / General mathematics (including Probability theory/Statistical mathematics) / Basic Section 11010:Algebra-related / General mathematics (including Probability theory/Statistical mathematics) / General mathematics (including Probability theory/Statistical mathematics)
Except Principal Investigator
Algebra … More / Algebra / Foundations of mathematics/Applied mathematics / Basic Section 12030:Basic mathematics-related / General mathematics (including Probability theory/Statistical mathematics) / 代数学・幾何学 / Sections That Are Subject to Joint Review: Basic Section12030:Basic mathematics-related , Basic Section12040:Applied mathematics and statistics-related / Basic Section 12040:Applied mathematics and statistics-related / Global analysis / General mathematics (including Probability theory/Statistical mathematics) / Geometry Less
Keywords
Principal Investigator
有限群 / 有限体 / グラフ / 組合せデザイン / アソシエーション・スキーム / アダマール行列 / 固有値 / 代数的組合せ論 / 等角直線族 / 指標表 … More / 格子 / 自己双対符号 / 代数的符号理論 / グラフ理論 / スピンモデル / 有限幾何 / 距離正則グラフ / 三重対角行列 / 実対称行列 / ザイデル行列 / 巡回行列 / 複素アダマール行列 / グラム行列 / 球面デザイン / 既約表現 / 置換群 / 有限群論 / 代数的組み合わせ論 / 有限置換群 / LATTICE / MODULAR FORM / SPIN MODEL / FINITE FIELD / DISTANCE-REGULAR GRAPH / SELF-DUAL CODE / ALGEBRAIC COMBINATORICS / モジュラー形成 / 保型形式 / 代数的符号 / 線形符号 / 整数格子 / 球デザイン / ブルガリア : オランダ / 国際情報交換 / 置換群論 / 組合せデザイン理論 / 離散幾何 / 符号理論 / 応用数学 / 交代形式 / カテゴリー / 予測モデル / 統計的検定 / 分割表解析 / ヤコビ形式 / 符号 / アソシエーションスキーム / コード / ブロックデザイン / 二次形式 / 自己同型群 … More
Except Principal Investigator
格子 / デザイン / 代数的組合せ論 / グラフ / association scheme / スピンモデル / アソシエーションスキーム / 組合せデザイン / 自己双対符号 / 組合せ論 / 有限群 / 符号 / spin model / 頂点作用素代数 / 散在型単純群 / 単純群 / code / spherical design / コード / algebraic combinatorics / 符号理論 / lattice / モンスター単純群 / modular form / モジュラー形式 / 球面デザイン / 代数的グラフ理論 / スペクトラルグラフ理論 / 代数的符号理論 / design / Terwilliger algebra / モジュラー不変性 / 指標表 / 距離正則グラフ / Hadamard行列 / 線形補双対符号 / 整格子 / 離散数学 / coherent configuration / Vertex Operator Algebra / Design / Lattice / Code / Sporadic Simple Group / Simple Group / Finite Group / random walk / q-Onsager algebra / Quantum group / P-and Q-polynomial / ヤコビ形式 / 保型形式 / 有限群の不変式環 / modular invariance / Four-weight spin model / Bose-Mesner algebra / 固有値 / Bose-Mesner代数 / TD-pair / 自己同型群 / 有限アーベル群 / moduler invariance / Hamming scheme / アダマール行列 / デザイン理論 / LCD 符号 / 3互換群 / 量子ウォーク / 離散構造 / central extensions / abelian extensions / natural density / Zp-extensions / Iwasawa invariants / ideal class groups / class numbers / algebraic number fields / 局所体 / p進L関数 / アルゴリズム / 組合せ構造 / アーベル体 / 中心拡大 / アーベル拡大 / 自然密度 / Zp拡大 / 岩澤不変量 / イデアル類群 / 類数 / 代数体 / visualization / Dirichlet eigenvalue problem / biharmonic map / bi-Yang-Mills connection / Yang-Mills connection / Ricci curvature / convergence rate / heat kernel / レビ平坦構造 / コーシー・リーマン・リー群 / ノイマン固有値問題 / カラビ・ヤウ多様体 / ケーラー多様体 / ディラック作用素 / 複素スピン構造 / サイバーグ・ウィッテン方程式 / 孤立現象 / 2-ヤング・ミルズ場 / ヤング・ミルズ場 / 調和写像 / 数値計算プログラム / ノイマン境界値固有値問題 / ディリクレ境界値固有値問題 / 可視化 / ディリクレ固有値問題 / 2-調和写像 / 2-ヤング・ミルズ接続 / ヤング・ミルズ接続 / リッチ曲率 / 収束比率 / 熱核 / sphece packing / Sphere packing / Moonshine / アソシエーションスキー / 球面上のデザイン / Graph / Siegel modular forms / Jacobi form / Coding theory / ジーゲル保型形式 / Ramanujan graph / tight designs / グラスマン空間 / tight design / kissing number / ラマンジャングラフ / アソシエーションスチーム / Monster Simple Group / W代数 / モンスター純群 / statistical tests / finite algebra / stochastic numerical analysis / pseudorandom numbers / 統計的検定 / 有限代数 / 確率数値解析 / 擬似乱数 / 4-weight spin models / s-distance sets / type II matrices / Bose-Mesnsr algebra / designs / Association Schemes / Spin model / 自己双対性 / SDP / symmetric design / self dual / typeII行列 / 4-weight spin model / s-距離集合 / type II行列 / distance-iegular / TD-pain / cyclotomic scheme / spir model / Jacobi sum / nonthin / Quantum Group / distance-regular / Monster simple group / Vertex Operator Algebras / Graphs / Lattices / Codes / Designs / Simple Groups / Finite Groups / 格子(lattice) / 符号(code) / codes over finite alrelian group / finite ring / associationscheme / Algebraic combinatorics / Type IIコード / Terwilliger代数 / 2次形式 / modular invariant / 有限アーベル群上のコード / 有限環 / regular popyhedron / automorphic form / invariant ring of finite group / weight enumerator / association schemes / 複素鏡映群 / コヒアレント・ユンフィグレーション / 正多面体 / 重さ枚挙多項式 / finite abelian group / link invariant / アソシェーションスキーム / リンクの不変量 / 代数的整数 / 多項式 / 代数構造 / Haagerup set / Nomura algebra / type-II 行列 / 野村代数 / アソシエーション・スキーム / type-II行列 / 複素アダマール行列 / Leaping convergents / 線形関係式 / 整数論 / 連分数 / 組み合わせ論 / 代数学 / 数論 / 群論 / P- and Q- polynomial sch / distance-regular graph / P- and Q- polynomial scheme / Askey-Wilson polynomial / Augmented TD-aleebra / TD-algebra / Quantum affine algebra / P- and Q-poly. Scheme / 極値集合 / Leonard pair / P- and Q-polynomial scheme / 有限体 / 量子符号 / 双対性 / アソシエ-シエンスキーム / ディリクレ指標 / 保型関数 / ノルム剰余 / 円分体 / ルビン-ティト群 / p進ゼータ関数 / ガウス和 / linkの不変量 / 差集合 Less
  • Research Projects

    (48 results)
  • Research Products

    (188 results)
  • Co-Researchers

    (88 People)
  •  等角直線族の組合せ論的研究Principal Investigator

    • Principal Investigator
      宗政 昭弘
    • Project Period (FY)
      2025 – 2027
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 12030:Basic mathematics-related
    • Research Institution
      Tohoku University
  •  Krein parameters in Q-polynomial association schemes and applications to design theoryPrincipal Investigator

    • Principal Investigator
      宗政 昭弘
    • Project Period (FY)
      2024 – 2025
    • Research Category
      Grant-in-Aid for JSPS Fellows
    • Review Section
      Basic Section 11010:Algebra-related
    • Research Institution
      Tohoku University
  •  Centralizer algebras of monomial representations, Hadamard matrices and association schemesPrincipal Investigator

    • Principal Investigator
      宗政 昭弘
    • Project Period (FY)
      2024 – 2025
    • Research Category
      Grant-in-Aid for JSPS Fellows
    • Review Section
      Basic Section 11010:Algebra-related
    • Research Institution
      Tohoku University
  •  Evolution of Combinatorial Coding Theory

    • Principal Investigator
      原田 昌晃
    • Project Period (FY)
      2023 – 2027
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 12030:Basic mathematics-related
      Basic Section 12040:Applied mathematics and statistics-related
      Sections That Are Subject to Joint Review: Basic Section12030:Basic mathematics-related , Basic Section12040:Applied mathematics and statistics-related
    • Research Institution
      Tohoku University
  •  Characterization and classification of integrable algebraic structures by algebraic graph theory.

    • Principal Investigator
      Taniguchi Tetsuji
    • Project Period (FY)
      2021 – 2023
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 12030:Basic mathematics-related
    • Research Institution
      Hiroshima Institute of Technology
  •  Noncommutative association schemes, coherent algebras, their irreducible decompositions and applicationsPrincipal Investigator

    • Principal Investigator
      Akihiro Munemasa
    • Project Period (FY)
      2020 – 2022
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 11010:Algebra-related
    • Research Institution
      Tohoku University
  •  A synthetic study of algebraic coding theory

    • Principal Investigator
      Harada Masaaki
    • Project Period (FY)
      2019 – 2023
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 12030:Basic mathematics-related
    • Research Institution
      Tohoku University
  •  Eigenvalues of association schemes and characters of finite groupsPrincipal Investigator

    • Principal Investigator
      Munemasa Akihiro
    • Project Period (FY)
      2017 – 2019
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Algebra
    • Research Institution
      Tohoku University
  •  On Characterisations and Classifications of graphs by their Eigenvalues

    • Principal Investigator
      Taniguchi Tetsuji
    • Project Period (FY)
      2016 – 2019
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Foundations of mathematics/Applied mathematics
    • Research Institution
      Hiroshima Institute of Technology
  •  Comprehensive research on algebraic coding theory

    • Principal Investigator
      Harada Masaaki
    • Project Period (FY)
      2015 – 2018
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Foundations of mathematics/Applied mathematics
    • Research Institution
      Tohoku University
  •  Constructions of spherical designs using finite groups and latticesPrincipal Investigator

    • Principal Investigator
      Munemasa Akihiro
    • Project Period (FY)
      2014 – 2016
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Algebra
    • Research Institution
      Tohoku University
  •  Challenging of the existence problem of a certain self-dual code through combinatorial designs and lattices

    • Principal Investigator
      Harada Masaaki
    • Project Period (FY)
      2014 – 2015
    • Research Category
      Grant-in-Aid for Challenging Exploratory Research
    • Research Field
      Foundations of mathematics/Applied mathematics
    • Research Institution
      Tohoku University
  •  グラフの最小固有値とユークリッド空間内の等角直線族Principal Investigator

    • Principal Investigator
      宗政 昭弘
    • Project Period (FY)
      2014 – 2015
    • Research Category
      Grant-in-Aid for JSPS Fellows
    • Research Field
      Clinical psychology
    • Research Institution
      Tohoku University
  •  Constructions of complex Hadamard matrices using Algebraic Combinatorics and its applications

    • Principal Investigator
      Ikuta Takuya
    • Project Period (FY)
      2013 – 2015
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Foundations of mathematics/Applied mathematics
    • Research Institution
      Kobe Gakuin University
  •  A elucidation of the structure of graphs by Algebraic Graph Theory and Spectral Graph Theory

    • Principal Investigator
      Taniguchi Tetsuji
    • Project Period (FY)
      2013 – 2015
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Foundations of mathematics/Applied mathematics
    • Research Institution
      Hiroshima Institute of Technology
      Matsue National College of Technology
  •  Various aspects of sporadic simple groups

    • Principal Investigator
      KITAZUME MASAAKI
    • Project Period (FY)
      2012 – 2017
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Algebra
    • Research Institution
      Chiba University
  •  複素アダマール行列と関連した組合せ構造Principal Investigator

    • Principal Investigator
      宗政 昭弘
    • Project Period (FY)
      2012 – 2014
    • Research Category
      Grant-in-Aid for JSPS Fellows
    • Research Field
      General mathematics (including Probability theory/Statistical mathematics)
    • Research Institution
      Tohoku University
  •  A New Development of Algebraic Coding Theory

    • Principal Investigator
      HARADA Masaaki
    • Project Period (FY)
      2011 – 2014
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      General mathematics (including Probability theory/Statistical mathematics)
    • Research Institution
      Tohoku University
      Yamagata University
  •  Analytic, Algebraic and Combinatorial studies on continued fractions

    • Principal Investigator
      KOMATSU Takao
    • Project Period (FY)
      2010 – 2013
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Algebra
    • Research Institution
      Hirosaki University
  •  Algebraic coding theory and combinatorial designs

    • Principal Investigator
      HARADA Masaaki
    • Project Period (FY)
      2008 – 2010
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      General mathematics (including Probability theory/Statistical mathematics)
    • Research Institution
      Yamagata University
  •  Study on algebraic or combinatorial structures whose automorphism groups contain finite simple groups

    • Principal Investigator
      KITAZUME Masaaki
    • Project Period (FY)
      2007 – 2010
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Algebra
    • Research Institution
      Chiba University
  •  Research on algebraic coding theory and its applications for vertex operator algebras

    • Principal Investigator
      BETSUMIYA Koichi
    • Project Period (FY)
      2007 – 2010
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Algebra
    • Research Institution
      Jobu University
  •  Representations of Terwilliger algebras and their applications

    • Principal Investigator
      ITO Tatsuro
    • Project Period (FY)
      2006 – 2009
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      General mathematics (including Probability theory/Statistical mathematics)
    • Research Institution
      Kanazawa University
  •  Applications of algebraic methods in coding theory to combinatorial designs and discrete geometryPrincipal Investigator

    • Principal Investigator
      MUNEMASA Akihiro
    • Project Period (FY)
      2005 – 2008
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      General mathematics (including Probability theory/Statistical mathematics)
    • Research Institution
      Tohoku University
  •  Synthetic study of algebraic combinatorics

    • Principal Investigator
      BANNAI Eiichi
    • Project Period (FY)
      2004 – 2007
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Algebra
    • Research Institution
      Kyushu University
  •  Global analysis of the heat kernels on Riemannian manifolds and graphs

    • Principal Investigator
      URAKAWA Hajime
    • Project Period (FY)
      2004 – 2006
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Global analysis
    • Research Institution
      Tohoku University
  •  Research on ideal class groups of algebraic number fields and number theoretic functions and its applications

    • Principal Investigator
      TAYA Hisao
    • Project Period (FY)
      2004 – 2006
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Algebra
    • Research Institution
      Tohoku University
  •  Finite Simple Groups and Related Codes, Lattices and Vertex Operator Algebras

    • Principal Investigator
      KITAZUME Masaaki
    • Project Period (FY)
      2003 – 2006
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Algebra
    • Research Institution
      Chiba University
  •  誤り訂正量子符号の有限群論的アプローチ

    • Principal Investigator
      KITAZUME Masaaki
    • Project Period (FY)
      2002 – 2004
    • Research Category
      Grant-in-Aid for Exploratory Research
    • Research Field
      Algebra
    • Research Institution
      Chiba University
  •  A study of the interacting area among the theory of quadratic forms and the theory of modular forms and the algebraic coding theory

    • Principal Investigator
      OZEKI Michio
    • Project Period (FY)
      2002 – 2004
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Algebra
    • Research Institution
      Yamagata University
  •  Comprehensive study on Algebraic Combinatorics

    • Principal Investigator
      BANNAI Eiichi
    • Project Period (FY)
      2001 – 2003
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Algebra
    • Research Institution
      Kyushu University
  •  Finite Simple Groups and Related Codes, Lattices and Vertex Operator Algebras

    • Principal Investigator
      KITAZUME Masaaki
    • Project Period (FY)
      2000 – 2002
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Algebra
    • Research Institution
      Chiba University
  •  ALGEBRAIC CODING THEORY, COMBINATORIAL DESIGNS AND ASSOCIATION SCHEMESPrincipal Investigator

    • Principal Investigator
      MUNEMASA Akihiro
    • Project Period (FY)
      2000 – 2003
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      General mathematics (including Probability theory/Statistical mathematics)
    • Research Institution
      TOHOKU UNIVERSITY
      Kyushu University
  •  Representations of TerwiUiger algebras and their applications

    • Principal Investigator
      ITO Tatsuro
    • Project Period (FY)
      1998 – 2001
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Algebra
    • Research Institution
      Kanazawa University
  •  Association schemes and spin models

    • Principal Investigator
      BANNNAI Etsuko
    • Project Period (FY)
      1998 – 2001
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Algebra
    • Research Institution
      KYUSHU UNIVERSITY
  •  Pseudorandom numbers and their Application to Stochastic Numerical Analysis

    • Principal Investigator
      TAKASHIMA Keizo
    • Project Period (FY)
      1998 – 1999
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      General mathematics (including Probability theory/Statistical mathematics)
    • Research Institution
      Okayama University of Science
  •  A collective study of algebraic combinatorics

    • Principal Investigator
      BANNAI Eiichi
    • Project Period (FY)
      1997 – 2000
    • Research Category
      Grant-in-Aid for Scientific Research (A).
    • Research Field
      Algebra
    • Research Institution
      KYUSHU UNIVERSITY
  •  Finite Groups (Sporadic Simple Groups) and Related Topics

    • Principal Investigator
      KITAZUME Masaaki
    • Project Period (FY)
      1997 – 1999
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Algebra
    • Research Institution
      Chiba University
  •  有限体上の交代形式の幾何学的研究Principal Investigator

    • Principal Investigator
      宗政 昭弘
    • Project Period (FY)
      1996
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Algebra
    • Research Institution
      Kyushu University
  •  アソシエーションスキームにおけるコードとデザインPrincipal Investigator

    • Principal Investigator
      宗政 昭弘
    • Project Period (FY)
      1995
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      Algebra
    • Research Institution
      Kyushu University
  •  Research on association schemes and related topics

    • Principal Investigator
      BANNAI Eiichi
    • Project Period (FY)
      1995 – 1996
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Algebra
    • Research Institution
      KYUSHU UNIVERSITY
  •  代数的組合せ論の手法を用いるリンク、3次元多様体の位相不変量の構成

    • Principal Investigator
      BANNAI Etsuko
    • Project Period (FY)
      1994
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Kyushu University
  •  アソシェーションスキームとその双対性Principal Investigator

    • Principal Investigator
      宗政 昭弘
    • Project Period (FY)
      1994
    • Research Category
      Grant-in-Aid for Encouragement of Young Scientists (A)
    • Research Field
      Algebra
    • Research Institution
      Kyushu University
  •  p進解析と代数的整数論

    • Principal Investigator
      白谷 克巳
    • Project Period (FY)
      1993
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      Algebra
    • Research Institution
      Kyushu University
  •  有限体上の二次形式及び交代形式の幾何学的研究Principal Investigator

    • Principal Investigator
      宗政 昭弘
    • Project Period (FY)
      1993
    • Research Category
      Grant-in-Aid for Encouragement of Young Scientists (A)
    • Research Field
      Algebra
    • Research Institution
      Kyushu University
  •  代数的組合せ論国際会議へ向けての準備

    • Principal Investigator
      BANNAI Eiichi
    • Project Period (FY)
      1992
    • Research Category
      Grant-in-Aid for Co-operative Research (B)
    • Research Field
      代数学・幾何学
    • Research Institution
      Kyushu University
  •  差集合とassociation schemeの関連性の研究

    • Principal Investigator
      山田 美枝子
    • Project Period (FY)
      1992
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      代数学・幾何学
    • Research Institution
      Kyushu University
  •  Study of association schemes

    • Principal Investigator
      BANNAI Eiichi
    • Project Period (FY)
      1992 – 1993
    • Research Category
      Grant-in-Aid for General Scientific Research (B)
    • Research Field
      代数学・幾何学
    • Research Institution
      KYUSHU UNIVERSITY

All 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 Other

All Journal Article Presentation Book

  • [Book] Algebraic Combinatorics and the Monster Group2023

    • Author(s)
      Takuya Ikuta, Akihiro Munemasa
    • Publisher
      Cambridge University Press
    • ISBN
      9781009338042
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Journal Article] Maximal digraphs whose Hermitian spectral radius is at most 22023

    • Author(s)
      Gavrilyuk Alexander L.、Munemasa Akihiro
    • Journal Title

      Linear Algebra and its Applications

      Volume: 658 Pages: 331-349

    • DOI

      10.1016/j.laa.2022.11.007

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Journal Article] Quasi-symmetric 2-(41,9,9) designs and doubly even self-dual codes of length 402022

    • Author(s)
      Munemasa Akihiro、Tonchev Vladimir D.
    • Journal Title

      Applicable Algebra in Engineering, Communication and Computing

      Volume: 33 Issue: 6 Pages: 855-866

    • DOI

      10.1007/s00200-022-00543-w

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Journal Article] A note on Assmus-Mattson type theorems2021

    • Author(s)
      Tsuyoshi Miezaki, Akihiro Munemasa & Hiroyuki Nakasora
    • Journal Title

      Designs, Codes and Cryptography

      Volume: 89 Issue: 5 Pages: 843-858

    • DOI

      10.1007/s10623-021-00848-w

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K03217, KAKENHI-PROJECT-20K03527
  • [Journal Article] Maximality of Seidel matrices and switching roots of graphs2021

    • Author(s)
      Cao Meng-Yue、Koolen Jack H.、Munemasa Akihiro、Yoshino Kiyoto
    • Journal Title

      Graphs and Combinatorics

      Volume: 37 Issue: 5 Pages: 1491-1507

    • DOI

      10.1007/s00373-021-02359-w

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-21J14427, KAKENHI-PROJECT-20K03527
  • [Journal Article] Signed analogue of line graphs and their smallest eigenvalues2021

    • Author(s)
      Gavrilyuk Alexander L.、Munemasa Akihiro、Sano Yoshio、Taniguchi Tetsuji
    • Journal Title

      Journal of Graph Theory

      Volume: 98 Issue: 2 Pages: 309-325

    • DOI

      10.1002/jgt.22699

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K03598, KAKENHI-PROJECT-20K03527
  • [Journal Article] Bordered Complex Hadamard Matrices and Strongly Regular Graphs2021

    • Author(s)
      Takuya Ikuta and Akihiro Munemasa
    • Journal Title

      IIS

      Volume: 27 Issue: 1 Pages: 41-56

    • DOI

      10.4036/iis.2020.R.03

    • NAID

      130008009393

    • ISSN
      1340-9050, 1347-6157
    • Language
      English
    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Journal Article] Krein Parameters of Fiber-Commutative Coherent Configurations2020

    • Author(s)
      Ito Keiji、Munemasa Akihiro
    • Journal Title

      Algebra Colloquium

      Volume: 27 Issue: 01 Pages: 1-10

    • DOI

      10.1142/s1005386720000024

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18J10848, KAKENHI-PROJECT-17K05155
  • [Journal Article] Classification of Self-dual Codes of Length 20 over Z_4and Length at Most 18 over F_2+uF_22019

    • Author(s)
      Betty Rowena Alma L.、Munemasa Akihiro
    • Journal Title

      Lecture Notes in Comp. Sci.

      Volume: 11929 Pages: 64-77

    • DOI

      10.1007/978-3-030-35199-1_4

    • ISBN
      9783030351984, 9783030351991
    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Journal Article] Complex Hadamard matrices attached to a 3-class nonsymmetric association scheme2019

    • Author(s)
      Takuya Ikuta, Akihiro Munemasa
    • Journal Title

      Graphs and Combinatorics

      Volume: 印刷中

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Journal Article] Complex Hadamard Matrices Attached to a 3-Class Nonsymmetric Association Scheme2019

    • Author(s)
      Ikuta Takuya、Munemasa Akihiro
    • Journal Title

      Graphs and Combinatorics

      Volume: 35 Issue: 6 Pages: 1293-1304

    • DOI

      10.1007/s00373-019-02044-z

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Journal Article] Bent Vectorial Functions, Codes and Designs2019

    • Author(s)
      Ding Cunsheng、Munemasa Akihiro、Tonchev Vladimir D.
    • Journal Title

      IEEE Transactions on Information Theory

      Volume: 65 Issue: 11 Pages: 7533-7541

    • DOI

      10.1109/tit.2019.2922401

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Journal Article] Krein parameters of fiber-commutative coherent configurations2019

    • Author(s)
      Keiji Ito, Akihiro Munemasa
    • Journal Title

      Algebra Colloquium

      Volume: 印刷中

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Journal Article] New strongly regular graphs from finite geometries via switching2019

    • Author(s)
      Ihringer Ferdinand、Munemasa Akihiro
    • Journal Title

      Linear Algebra and its Applications

      Volume: 580 Pages: 464-474

    • DOI

      10.1016/j.laa.2019.07.014

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Journal Article] Butson-type complex Hadamard matrices and association schemes on Galois rings of characteristic 42018

    • Author(s)
      Takuya Ikuta and Akihiro Munemasa
    • Journal Title

      Special Matrices

      Volume: 6 Issue: 1 Pages: 1-10

    • DOI

      10.1515/spma-2018-0001

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Journal Article] Nonexistence of certain singly even self-dual codes with minimal shadow2018

    • Author(s)
      S. Bouyuklieva, M. Harada and A. Munemasa
    • Journal Title

      Electronic J. Combin.

      Volume: 25

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15H03633
  • [Journal Article] Some restrictions on weight enumerators of singly even self-dual codes II2018

    • Author(s)
      M. Harada and A. Munemasa
    • Journal Title

      Interdiscip. Inform. Sci.

      Volume: 印刷中

    • NAID

      130007412755

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-15H03633
  • [Journal Article] Some Restrictions on Weight Enumerators of Singly Even Self-Dual Codes II2018

    • Author(s)
      Masaaki Harada and Akihiro Munemasa
    • Journal Title

      IIS

      Volume: 24 Issue: 1 Pages: 77-85

    • DOI

      10.4036/iis.2017.R.03

    • NAID

      130007412755

    • ISSN
      1340-9050, 1347-6157
    • Language
      English
    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-15H03633
  • [Journal Article] A note on the Brawley-Carlitz theorem on irreducibility of composed products of polynomials over finite fields2017

    • Author(s)
      Akihiro Munemasa, Hiroko Nakamura
    • Journal Title

      Lecture Notes in Computer Science

      Volume: 10064 Pages: 84-92

    • DOI

      10.1007/978-3-319-55227-9_7

    • ISBN
      9783319552262, 9783319552279
    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26400003
  • [Journal Article] Self-Dual Codes and the Nonexistence of a Quasi-Symmetric 2-(37,9,8) Design with Intersection Numbers 1 and 32017

    • Author(s)
      Harada Masaaki、Munemasa Akihiro、Tonchev Vladimir D.
    • Journal Title

      J. Combin. Designs

      Volume: 25 Issue: 10 Pages: 469-476

    • DOI

      10.1002/jcd.21556

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15H03633
  • [Journal Article] Transforming a Matrix into a Standard Form2017

    • Author(s)
      Akihiro Munemasa, Pritta Etriana Putri
    • Journal Title

      IIS

      Volume: 23 Issue: 2 Pages: 163-166

    • DOI

      10.4036/iis.2016.S.02

    • NAID

      130006287946

    • ISSN
      1340-9050, 1347-6157
    • Language
      English
    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-26400003
  • [Journal Article] Godsil-McKay switching and twisted Grassmann graphs2017

    • Author(s)
      Akihiro Munemasa
    • Journal Title

      Designs, Codes and Cryptography

      Volume: 84 Issue: 1-2 Pages: 173-179

    • DOI

      10.1007/s10623-016-0244-1

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26400003
  • [Journal Article] On s -extremal singly even self-dual [24 k + 8,12 k + 4,4 k + 2] codes2017

    • Author(s)
      Harada Masaaki、Munemasa Akihiro
    • Journal Title

      Finite Fields and Their Applications

      Volume: 48 Pages: 306-317

    • DOI

      10.1016/j.ffa.2017.08.008

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-15H03633
  • [Journal Article] Equiangular lines in Euclidean spaces2016

    • Author(s)
      G. Greaves, J. Koolen, A. Munemasa, and F. Szollosi
    • Journal Title

      J. Combin. Theory Ser. A

      Volume: 138 Pages: 208-235

    • DOI

      10.1016/j.jcta.2015.09.008

    • Peer Reviewed / Acknowledgement Compliant / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-14F03903
  • [Journal Article] On the Classification of Self-Dual \mathbb{Z}<sub><i>k</i></sub>-Codes II2016

    • Author(s)
      Masaaki Harada, Akihiro Munemasa
    • Journal Title

      IIS

      Volume: 22 Issue: 1 Pages: 81-85

    • DOI

      10.4036/iis.2015.R.01

    • NAID

      130005281142

    • ISSN
      1340-9050, 1347-6157
    • Language
      English
    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-26400003
  • [Journal Article] On the classification of self-dual Zk-codes II2016

    • Author(s)
      Masaaki Harada and Akihiro Munemasa
    • Journal Title

      Interdiscip. Inform. Sci.

      Volume: 印刷中

    • NAID

      130005281142

    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PROJECT-26610032
  • [Journal Article] On the smallest eigenvalues of the line graphs of some trees.2015

    • Author(s)
      Munemasa, Akihiro; Sano, Yoshio; Taniguchi, Tetsuji
    • Journal Title

      Linear Algebra and its Applications

      Volume: 466 Pages: 501-511

    • DOI

      10.1016/j.laa.2014.10.037

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-25400217, KAKENHI-PROJECT-15K20885
  • [Journal Article] Complex Hadamard matrices contained in a Bose-Mesner algebra2015

    • Author(s)
      Takuya Ikuta and Akihiro Munemasa
    • Journal Title

      Special Matrices

      Volume: 3 Pages: 91-110

    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PROJECT-25400215
  • [Journal Article] Edge-signed graphs with smallest eigenvalue greater than -22015

    • Author(s)
      Greaves, Gary; Koolen, Jack; Munemasa, Akihiro; Sano, Yoshio; Taniguchi, Tetsuji
    • Journal Title

      Journal of Combinatorial Theory. Series B

      Volume: 110 Pages: 90-110

    • DOI

      10.1016/j.jctb.2014.07.006

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-25400217, KAKENHI-PROJECT-15K20885
  • [Journal Article] Fat Hoffman graphs with smallest eigenvalue greater than -32014

    • Author(s)
      Akihiro Munemasa, Yoshio Sano, Tetsuji Taniguchi
    • Journal Title

      Discrete Applied Mathematics

      Volume: Available online 29 January Pages: 78-88

    • DOI

      10.1016/j.dam.2014.01.008

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-25400217, KAKENHI-PROJECT-25887007
  • [Journal Article] Upper bounds on cyclotomic numbers2013

    • Author(s)
      K. Betsumiya, M. Hirasaka, Takao Komatsu and A. Munemasa
    • Journal Title

      Linear Algebra Appl.

      Volume: 438 Pages: 111-120

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22540005
  • [Journal Article] Residue codes of extremal Type II Z4-codes and the moonshine vertex operator algebra2013

    • Author(s)
      Masaaki Harada, Ching Hung Lam and Akihiro Munemasa
    • Journal Title

      Math. Zeitschrift

      Volume: 274 Issue: 1-2 Pages: 685-700

    • DOI

      10.1007/s00209-012-1091-z

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-23340021
  • [Journal Article] Classification of self-dual codes of length 362012

    • Author(s)
      M. Harada and A. Munemasa
    • Journal Title

      Advances Math. Communications

      Volume: 6 Issue: 2 Pages: 229-235

    • DOI

      10.3934/amc.2012.6.229

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-23340021
  • [Journal Article] Classification of generalized Hadamard matrices H(6, 3) and quaternary Hermitian self-dual codes of length 182010

    • Author(s)
      M.Harada, C.Lam, A.Munemasa, V.D.Tonchev
    • Journal Title

      Electronic J.Combin. 17

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20540103
  • [Journal Article] Classification of ternary extremal self-dual codes of length 282009

    • Author(s)
      M. Harada, A. Munemasa, B. Venkov
    • Journal Title

      Math.Comp. 78

      Pages: 1787-1796

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] Mass formula for even codes over Z_82009

    • Author(s)
      別宮耕一・Rowana Alma L. Betty・宗政昭弘
    • Journal Title

      Cryptography and Coding, Springer LNCS 5921

      Pages: 65-77

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19540048
  • [Journal Article] There exists no self-dual[24,12,10]code over F5, Designs2009

    • Author(s)
      M. Harada, A. Munemasa
    • Journal Title

      Codes and Cryptography 12

      Pages: 125-127

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] A complete classification of ternary self-dual codes of length 242009

    • Author(s)
      M.Harada, A.Munemasa
    • Journal Title

      J.Combin.Theory Ser.A 116

      Pages: 1063-1072

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20540103
  • [Journal Article] Mass Formula for Even Codes over Z_82009

    • Author(s)
      Koichi Betsumiya, Rowena Alma L.Betty, Akihiro Munemasa
    • Journal Title

      Cryptography and Coding, Springer LNCS 5921

      Pages: 65-77

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19540048
  • [Journal Article] Mass formula for even codes over Z_8、Cryptography and Coding2009

    • Author(s)
      別宮耕一・Rowana Alma L.Betty・宗政昭弘
    • Journal Title

      Springer LNCS 5921

      Pages: 65-77

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19540048
  • [Journal Article] There exists no self-dual [24, 12, 10] code over F52009

    • Author(s)
      M. Harada, A. Munemasa
    • Journal Title

      Designs, Codes and Cryptography 12

      Pages: 125-127

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] On the classification of self-dual Z_k-codes2009

    • Author(s)
      M.Harada, A.Munemasa
    • Journal Title

      Lecture Notes Comput.Sci. 5921

      Pages: 78-90

    • Data Source
      KAKENHI-PROJECT-20540103
  • [Journal Article] There exists no self-dual [24, 12, 10] code over F_52009

    • Author(s)
      M.Harada, A.Munemasa
    • Journal Title

      Designs, Codes and Cryptogr. 52

      Pages: 125-127

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20540103
  • [Journal Article] Classification of ternary extremal self-dual codes of length 282009

    • Author(s)
      M.Harada, A.Munemasa, B.Venkov
    • Journal Title

      Mathematics of Comput. 78

      Pages: 1787-1796

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20540103
  • [Journal Article] Determination of weight enumerators of binary extremal self-dual $[42,21,8]$ codes2008

    • Author(s)
      S.Bouyuklieva, M.Harada and A.Munemasa
    • Journal Title

      Finite Fields and Their Appl 14

      Pages: 177-187

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] Determination of weight enumerators of binary extremal self?dual [42, 21, 8] codes2008

    • Author(s)
      S. Bouyuklieva, M. Harad a, A. Munemasa
    • Journal Title

      Finite Fields and Their Applications 14

      Pages: 177-187

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] Determination of weight enumerators of binary extremal self-dual[42,21,8]codes2008

    • Author(s)
      S. Bouyuklieva, M. Harada, A. Munemasa
    • Journal Title

      Finite Fields and Their Applications 14

      Pages: 177-187

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] Determination of weight enumerators of binary extremal self-dual [42,21,8]codes2008

    • Author(s)
      S.Bouyuklieva, M.Harada and A.Munemasa
    • Journal Title

      Finite Fields and Their Applications 14

      Pages: 177-187

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] A new example of non-amorphous association schemes2008

    • Author(s)
      T. Ikuta, A. Munemasa
    • Journal Title

      Contributions to Discrete Mathematics 3

      Pages: 31-36

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] 0n the covering radii of extremal doubly even self-dual codes2007

    • Author(s)
      M. Harada and A. Munemasa
    • Journal Title

      Adv. Math. Commun 1

      Pages: 251-256

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18340022
  • [Journal Article] Determination of weight enumerator of binary extremal self-dual [42, 21, 8] codes2007

    • Author(s)
      宗政昭弘, Stefka Bouyuklieva, 原田昌晃
    • Journal Title

      Finite Fields and Their Applications (掲載予定)

    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] Determination of weight enumerators of binary extremal self-dual[42,21,8]codes.2007

    • Author(s)
      S.Bouyuklieva, M.Harada, A.Munemasa
    • Journal Title

      Finite Fields and Their Applications 14

      Pages: 177-187

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19540048
  • [Journal Article] On the covering radii of extremal doubly even self-dual codes2007

    • Author(s)
      Masaaki Harada and Akihiro Munemasa
    • Journal Title

      Adv.Math.Commun. 1

      Pages: 251-256

    • NAID

      120003728106

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] On the covering radii of extremal doubly even self-dual codes2007

    • Author(s)
      Masaaki Harada and Akihiro Munemasa
    • Journal Title

      Adv.Math.Commun 1

      Pages: 251-256

    • NAID

      120003728106

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] Simple abelian quadruple systems2007

    • Author(s)
      A. Munemasa and M. Sawa
    • Journal Title

      J. Combin. Theory, Ser. A 114 114

      Pages: 1160-1164

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] On the covering radii of extremal doubly even self-dual codes2007

    • Author(s)
      M. Harada, A. Munemasa
    • Journal Title

      Adv.Math.Commun 1

      Pages: 251-256

    • NAID

      120003728106

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] Simple abelian quadruple systems2007

    • Author(s)
      A. Munemasa and M. Sawa
    • Journal Title

      J. Combin. Theory, Ser A 114

      Pages: 1160-1164

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18340022
  • [Journal Article] Simple abelian quadruple systems2007

    • Author(s)
      Akihiro Munemasa and Masanori Sawa
    • Journal Title

      J.Combin.Theory, Ser.〜A 114

      Pages: 1160-1164

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] On the covering radii of extremal doubly even self-dual codes2007

    • Author(s)
      M. Harada and A. Munemasa
    • Journal Title

      Adv. Math. Commun. 1

      Pages: 251-256

    • NAID

      120003728106

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] Simple abelian quadruple systems2007

    • Author(s)
      宗政昭弘, 澤正憲
    • Journal Title

      Journal of Combinatorial Theory, Ser. A (掲載予定)

    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] Hyperplane partitions and difference systems of sets2006

    • Author(s)
      宗政昭弘, 藤原良, Vladimir Tonchev
    • Journal Title

      J. Combin. Theory, Ser. A. 113

      Pages: 1689-1698

    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] Some restrictions on weight enumerators of singly even self-dual codes2006

    • Author(s)
      宗政昭弘, 原田昌晃
    • Journal Title

      IEEE Trans. Inform. Theory 52

      Pages: 1266-1269

    • NAID

      120002337725

    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] Hyperplane partitions and difference systems of sets2006

    • Author(s)
      Ryoh Fuji-Hara, Akihiro Munemasa and Vladimir Tonchev
    • Journal Title

      J.Combin.Theory, Ser.〜A 113

      Pages: 1689-1698

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] Some restrictions on weight enumerators of singly even self-dual codes2006

    • Author(s)
      Akihiro Munemasa
    • Journal Title

      IEEE Trans. Inform. Theory (with Masaaki Harada). 52

      Pages: 1266-1269

    • NAID

      120002337725

    • Data Source
      KAKENHI-PROJECT-18340022
  • [Journal Article] Some restrictions on weight enumerators of singly even self-dual codes2006

    • Author(s)
      Masaaki Harada and Akihiro Munemasa
    • Journal Title

      IEEE Trans.Inform.Theory 52

      Pages: 1266-1269

    • NAID

      120002337725

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] Binary singly even self-dual codeに関連したextremal problem2006

    • Author(s)
      A.Munemasa
    • Journal Title

      京都大学数理解析研究所講究録 1465

      Pages: 130-137

    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] Hyperplane partitions and difference systems of sets2006

    • Author(s)
      Akihiro Munemasa
    • Journal Title

      J. Combin. Theory, Ser. A (with Ryoh Fuji-Hara and Vladimir Tonchev). 113

      Pages: 1689-1698

    • Data Source
      KAKENHI-PROJECT-18340022
  • [Journal Article] Hyperplane partitions and difference systems of sets2006

    • Author(s)
      R. Fuji-Hara, A. Munemasa, V. D. Tonchev
    • Journal Title

      J.Combin.Theory, Ser. A, 113

      Pages: 1689-1698

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] Some restrictions on weight enumerators of singly even self-dual codes2006

    • Author(s)
      M. Harada, A. Munemasa
    • Journal Title

      IEEE Trans. Inform. Theory 52

      Pages: 1266-1269

    • NAID

      120002337725

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] Some restrictions on weight enumerators of singly even self-dual codes2006

    • Author(s)
      M.Harada, A.Munemasa
    • Journal Title

      IEEE Trans. Inform. Theory 52

      Pages: 1266-1269

    • NAID

      120002337725

    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] Some restrictions on weight enumerators of singly even self-dual codes2006

    • Author(s)
      A.Munemasa
    • Journal Title

      IEEE Trans. Inform. Theory 52

      Pages: 1266-1269

    • NAID

      120002337725

    • Data Source
      KAKENHI-PROJECT-16340044
  • [Journal Article] Hyperplane partitions and difference systems of sets2006

    • Author(s)
      R.Fuji-Hara, A.Munemasa, V.Tonchev
    • Journal Title

      J. Combinatorial Theory, Ser. A 113

      Pages: 1689-1698

    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] The nonexistence of certain, tight spherical design2005

    • Author(s)
      Eiichi Bannai, Akihiro Munemasa and B.Venkov
    • Journal Title

      St. Petersburg Math.J.(Also, Algebra i Analiz, 16 (2004), 1-23.) 16

      Pages: 609-625

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] The nonexistence of certain tight spherical designs2005

    • Author(s)
      E.BANNAI, A.Munemasa, B.Venkov
    • Journal Title

      St.Petersburg Math.J. (Algebra i Analiz. 16(2004),1-23) 16

      Pages: 609-625

    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] On some self-dual codes and unimodular lattices in dimension $48$2005

    • Author(s)
      Masaaki Harada, Masaaki Kitazume, Akihiro Munemasa and Boris Venkov
    • Journal Title

      European J.Combin 26

      Pages: 543-557

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] A characterization of designs related to an extremal doubly-even self-dual code of length 482005

    • Author(s)
      M.Harada, A.Munemasa, V.D.Tonchev
    • Journal Title

      Annals of Combinatorics 9

      Pages: 189-198

    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] On some self-dual codes and unimodular lattices in dimension 482005

    • Author(s)
      M.Harada, M.Kitazume, A.Munemasa, B.Venkov
    • Journal Title

      European Journal of Combinatorics 26

      Pages: 543-557

    • Data Source
      KAKENHI-PROJECT-14654002
  • [Journal Article] On some self-dual codes and unimodular lattices in dimension 482005

    • Author(s)
      M.Harada, M.Kitazume, A.Munemasa, B.Venkov
    • Journal Title

      European Journal of Combinatorics 26

      Pages: 543-557

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-15340002
  • [Journal Article] On some self-dual codes and unimodular lattices in dimension 482005

    • Author(s)
      M.Harada, M.Kitazume, A.Munemasa, R.Venkov
    • Journal Title

      European Journal of Combinatorics 26

      Pages: 543-557

    • Data Source
      KAKENHI-PROJECT-15340002
  • [Journal Article] On some self-dual codes and unimodular lattices in dimension 48,2005

    • Author(s)
      Masaaki Harada, Masaaki Kitazume, Akihiro Munemasa, Boris Venkov
    • Journal Title

      Europ.J.Combinatorics 26

      Pages: 543-557

    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] The nonexistence of certain tight spherical designs2005

    • Author(s)
      Eiichi, Bannai, A., Munemasa, B., Venkov
    • Journal Title

      St. Petersburg Math. J. 16

      Pages: 605-625

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] A characterization of designs related to an extremal doubly-even self-dual code of length 48,2005

    • Author(s)
      Masaaki Harada, Akihiro Munemasa, V.D.Tonchev
    • Journal Title

      Annals of Combinatorics 9

      Pages: 189-198

    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] On some self-dual codes and unimodular lattices in dimension 482005

    • Author(s)
      M.Harada, M.Kitazume, A.Munemasa, B.Venkov
    • Journal Title

      European Journal of Combinatorics 26

      Pages: 543-557

    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] A characterization of designs related to an extremal doubly-even self-dual code of length $48$2005

    • Author(s)
      Masaaki Harada, Akihiro Munemasa and Vladimir Tonchev
    • Journal Title

      Annals of Combinatorics 9

      Pages: 189-198

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] A new quasi-symmetric 2-(56,16,6) design obtained from codes2004

    • Author(s)
      Akihiro Munemasa
    • Journal Title

      Discrete Mathematics 29

      Pages: 231-234

    • Data Source
      KAKENHI-PROJECT-16540007
  • [Journal Article] Extremal self-dual $[40,20,81$ codes with covering radius $7$2004

    • Author(s)
      Masaaki Harada, Akihiro Munemasa and Kenichiro Tanabe
    • Journal Title

      Finite Fields and Their Applications 10

      Pages: 183-197

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] On a 5-design related to an extremal doubly even self-dualcode of length 722004

    • Author(s)
      M.Harada, M.Kitazume, A.Munemasa
    • Journal Title

      Journal of Combinatorial Theory (A) 107

      Pages: 143-146

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-15340002
  • [Journal Article] The nonexistence of centain tight sphercal designs2004

    • Author(s)
      E.Bannai, A.Munemasa, B.Venkov
    • Journal Title

      Algebra i Analiz 16

      Pages: 1-23

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-13440011
  • [Journal Article] A new quasi-symmetric $2$-$(56,16,6)$ design obtained from codes2004

    • Author(s)
      Akihiro Munemasa and Vladimir D.Tonchev
    • Journal Title

      Discrete Math 29

      Pages: 231-234

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] Directed strongly regular graphs via coherent algebras2004

    • Author(s)
      Mikhail Klin, Akihiro Munemasa, Mikhail Muzychuk and Paul-Hermann Zieschang
    • Journal Title

      Linear Algebra Appl 377

      Pages: 83-109

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] On a $5$-design related to an extremal doubly-even self-dualcode of length $72$2004

    • Author(s)
      Masaaki Harada, Masaaki Kitazume and Akihiro Munemasa
    • Journal Title

      J.Combin.Theory Ser.A 107

      Pages: 143-146

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] On a 5-design related to an extremal doubly even self-dual code of length 722004

    • Author(s)
      M.Harada, M.Kitazume, A.Munemasa
    • Journal Title

      Journal of Combinatorial Theory (A) 107

      Pages: 143-146

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-15340002
  • [Journal Article] The nonexistence of certain tight spherical designs2004

    • Author(s)
      E.Bannai, A.Munemasa, B.Venkov
    • Journal Title

      Algebra i Analiz 16

      Pages: 1-23

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-13440011
  • [Journal Article] The non existence of certain tight spherical designs2004

    • Author(s)
      E.Bannai, A.Munemasa, B.Venkov
    • Journal Title

      Algebra i Analiz 16

      Pages: 1-23

    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] Spherical 5-designs obtained from finite unitary groups2004

    • Author(s)
      Akihiro Munemasa
    • Journal Title

      European Journal of Combinatorics 25

      Pages: 261-267

    • Data Source
      KAKENHI-PROJECT-16540007
  • [Journal Article] Spherical 5-designs obtained from finite unitary groups2004

    • Author(s)
      Akihiro Munemasa
    • Journal Title

      European J.Combin 25

      Pages: 261-267

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] On a 5-design related to an extremal self-dual code of length 722004

    • Author(s)
      Masaaki Harada, Masaaki Kitazume, Akihiro Munemasa
    • Journal Title

      J.Combin.Theory, Ser.A 107

      Pages: 143-146

    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] On a 5-design related to an extremal doubly even self-dual code of length 722004

    • Author(s)
      M.Harada, M.Kitazume, A.Munemasa
    • Journal Title

      Journal of Combinatorial Theory (A) 107

      Pages: 143-146

    • Data Source
      KAKENHI-PROJECT-14654002
  • [Journal Article] Type II codes over F_2+u F_2 and applications to Hermitian modular forms2003

    • Author(s)
      E.Bannai, M.Narada, T.Ibukiyama, A.Munemasa, M.Oura
    • Journal Title

      Abh.Math.Sem.Univ.Hamburg 73

      Pages: 13-42

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-13440011
  • [Journal Article] Type II codes over √<t_2>+u√<t_2> and applications to Hermitian modular forms2003

    • Author(s)
      E.Bannai, M.Harada, T.Ibukiyama, A.Munemasa, M.Oura
    • Journal Title

      Abh. Math. Sem. Univ. Humburg 73

      Pages: 13-42

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-13440011
  • [Journal Article] Even unimodular Gaussian lattices of rank 122002

    • Author(s)
      A.Kitazume, A.Munemasa
    • Journal Title

      Journal of Number Theory Vol.95

      Pages: 77-94

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-14540004
  • [Journal Article] Even unimodular Gaussian lattices of rank 122002

    • Author(s)
      A.Kitazume, A.Munemasa
    • Journal Title

      Journal of Number Theory 95

      Pages: 77-94

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-14540004
  • [Journal Article] Some results on modular forms - Subgroups of the modular group whose ring of modular forms is a polynomial ring2001

    • Author(s)
      E.Bannai, M.Koike, A.Munemasa, J.Sekiguchi
    • Journal Title

      Advanced Studies in pure Math 32

      Pages: 245-254

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-13440011
  • [Journal Article] Some results on modular forms -- subgroups of the modular group whose ring of modular forms is a polynomial ring2001

    • Author(s)
      E.Bannai, M.Koike, A.Munemasa, J.Sekiguchi
    • Journal Title

      Advanced Studies in Pure Math 32

      Pages: 245-254

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-13440011
  • [Journal Article] Determination of weight enumerators of binary ex-tremal self-dual [42,21,8] codes

    • Author(s)
      Akihiro Munemasa
    • Journal Title

      Finite Fields and Their Applications (with Stefka Bouyuklieva and Masaaki Harada). (accepted for publication)

    • Data Source
      KAKENHI-PROJECT-18340022
  • [Journal Article] The twisted Grassmann graph is the block graph of a design

    • Author(s)
      A.Munemasa, V.D.Tonchev
    • Journal Title

      Innov.Incidence Geom. (掲載決定)

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20540103
  • [Journal Article] Mass formula for self-orthogonal codesover Z_p^2, Journal of Combinatorics

    • Author(s)
      R. A. L. Betty, A. Munemasa
    • Journal Title

      Information & System Sciences (掲載受理)

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Journal Article] Classification of self-dual codes of length 36

    • Author(s)
      M.Harada, A.Munemasa
    • Journal Title

      Advances Math.Communications

      Volume: (掲載決定)

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-23340021
  • [Journal Article] Some restrictions on weight enumerators of extremal self-dual codes

    • Author(s)
      Masaaki Harada, Akihiro Munemasa
    • Journal Title

      IEEE Transactions on Information Theory accepted in publication

    • Data Source
      KAKENHI-PROJECT-16340010
  • [Journal Article] Classification of quaternary Hermitian self-dual codes of length 20

    • Author(s)
      M.Harada, A.Munemasa
    • Journal Title

      IEEE Trans.Inform.Theory (掲載決定)

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20540103
  • [Journal Article] Simple abelian quadruple systems

    • Author(s)
      Akihiro Munemasa
    • Journal Title

      Journal of Combinatorial Theory, Ser. A (with Masanori Sawa). (accepted for publication)

    • Data Source
      KAKENHI-PROJECT-18340022
  • [Journal Article] On some self-dual codes and unimodular lattices in dimension 48

    • Author(s)
      M.Kitazume, M.Harada, A.Munemasa, B.Venkov
    • Journal Title

      European Journal of Combinatories (in press)

    • Data Source
      KAKENHI-PROJECT-14540004
  • [Presentation] Weakly distance-regular circulants2023

    • Author(s)
      Akihiro Munemasa
    • Organizer
      The 8th Workshop on Algebraic Graph Theory and its Applications
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Presentation] On the shadows of the unimodular lattices constructed from ternary self-dual codes2023

    • Author(s)
      Akihiro Munemasa
    • Organizer
      直交デザインと関連する組合せ論
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Presentation] Semibiplanes and an inequality for incidence structures2022

    • Author(s)
      宗政昭弘
    • Organizer
      Workshop on Algebraic Combinatorics, Online (zoom) organized by National Taiwan University
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Presentation] Sphere packings, root systems and signed graphs2022

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Combinatorics Today
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Presentation] Quasi-symmetric 2-(41, 9, 9) designs2022

    • Author(s)
      Akihiro Munemasa
    • Organizer
      第38回代数的組合せ論シンポジウム
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Presentation] Quasi-symmetric 2-(41,9,9) designs and doubly even self-dual codes of length 402022

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Hadamard 2020+2
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Presentation] Association schemes and spin models2022

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Graph Theory, Algebraic Combinatorics and Mathematical Physics
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Presentation] Extended double covers of non-symmetric association schemes of class 22022

    • Author(s)
      宗政昭弘
    • Organizer
      The 6th Workshop on Algebraic Graph Theory and its Applications
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Presentation] Hermitian adjacency matrices of digraphs and root lattices over the Gaussian integers2021

    • Author(s)
      宗政昭弘
    • Organizer
      Algebraic Graph Theory and Quantum Information
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Presentation] Neighbor-balanced bijections of hypercubes2021

    • Author(s)
      宗政昭弘
    • Organizer
      The 4-th Workshop on Algebraic Graph Theory
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Presentation] The regular two-graph on 276 vertices revisited2020

    • Author(s)
      宗政昭弘
    • Organizer
      The Ural Workshop on Group Theory and Combinatorics
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Presentation] The regular two-graph on 276 vertices revisited2020

    • Author(s)
      宗政昭弘
    • Organizer
      離散数学とその応用研究集会2020
    • Data Source
      KAKENHI-PROJECT-20K03527
  • [Presentation] Fomin's Improvement of the Thompson-Wielandt Theorem2019

    • Author(s)
      宗政昭弘
    • Organizer
      有限群論草津セミナー
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Presentation] Krein conditions for coherent configurations2019

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Ural Workshop on Group Theory and Combinatorics
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Presentation] Hermitian adjacency matrices of digraphs and root lattices over the Gaussian integers2019

    • Author(s)
      Akihiro Munemasa
    • Organizer
      International Conference on Algebraic Combinatorics
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Presentation] Hoffman's Limit Theorem2019

    • Author(s)
      Akihiro Munemasa
    • Organizer
      The International Conference and PhD-Master Summer School on Groups and Graphs Designs and Dynamics
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Presentation] Krein parameters of fiber-commutative coherent configurations2019

    • Author(s)
      Akihiro Munemasa
    • Organizer
      The 9th Slovenian International Conference on Graph Theory
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Presentation] Extremal finite sets in spheres and projective spaces2019

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Indo-Japan joint workshop on quantum computation and quantum information
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Presentation] Digraphs with Hermitian spectral radius at most 22019

    • Author(s)
      宗政昭弘
    • Organizer
      Japanese Conference on Combinatorics and Applications 2019
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Presentation] Equiangular lines in Euclidean spaces2019

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Frontiers in Mathematical Science Research Workshop
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Presentation] Krein parameters of fiber-commutative coherent configurations2019

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Taipei International Workshop on Combinatorics and Graph Theory
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Presentation] A variation of Godsil-McKay switching2018

    • Author(s)
      Akihiro Munemasa
    • Organizer
      An International Workshop on Algebraic Combinatorics
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Presentation] The Reed-Muller code RM(1,4), the Barnes-Wall lattice BW(16), and graphs with smallest eigenvalue -32018

    • Author(s)
      Akihiro Munemasa
    • Organizer
      The 2nd Tohoku-Bandung Bilateral Workshop, Extremal Graph Theory, Algebraic Graph Theory and Mathematical Approach to Network Science
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Presentation] A graph with smallest eigenvalue -3 related to the shorter Leech lattice2018

    • Author(s)
      Akihiro Munemasa
    • Organizer
      博多ワークショップ夏の集会
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Presentation] Imprimitive permutation groups which are nearly multiplicity-free2017

    • Author(s)
      Akihiro Munemasa
    • Organizer
      International Workshop on Bannai-Ito Theory
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Presentation] Butson-Hadamard matrices in association schemes of class 6 on Galois rings of characteristic 42017

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Workshop on Group Theory and Algebraic Combinatorics
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05155
  • [Presentation] Group theoretic aspects of the theory of association schemes2016

    • Author(s)
      宗政昭弘
    • Organizer
      International Workshop on Algebraic Combinatorics
    • Place of Presentation
      Anhui University(中国)
    • Year and Date
      2016-10-29
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400003
  • [Presentation] Triply even codes obtained from some graphs and finite geometries2016

    • Author(s)
      宗政昭弘
    • Organizer
      Graphs and Groups, Spectra and Symmetries
    • Place of Presentation
      Novosibirsk State University(ロシア)
    • Year and Date
      2016-08-21
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400003
  • [Presentation] Covering radii and shadows of binary self-dual codes2015

    • Author(s)
      宗政昭弘
    • Organizer
      代数学と計算
    • Place of Presentation
      首都大学東京(東京都)
    • Year and Date
      2015-12-15
    • Data Source
      KAKENHI-PROJECT-26400003
  • [Presentation] Richard Thompson's group F2015

    • Author(s)
      宗政昭弘
    • Organizer
      有限群論草津セミナー
    • Place of Presentation
      草津セミナーハウス(群馬県)
    • Year and Date
      2015-08-03
    • Data Source
      KAKENHI-PROJECT-26400003
  • [Presentation] Self-orthogonal designs and equitable partitions2015

    • Author(s)
      宗政昭弘
    • Organizer
      Algebraic Combinatorics Workshop
    • Place of Presentation
      浙江大学(中国)
    • Year and Date
      2015-09-20
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400003
  • [Presentation] Self-orthogonal designs and equitable partitions2015

    • Author(s)
      宗政昭弘
    • Organizer
      計算代数システムによる新しい数学の開拓と進展
    • Place of Presentation
      京都大学(京都市)
    • Year and Date
      2015-09-30
    • Data Source
      KAKENHI-PROJECT-26400003
  • [Presentation] A parametric family of complex Hadamard matrices2014

    • Author(s)
      宗政昭弘
    • Organizer
      実験計画法およびその周辺の組合せ構造
    • Place of Presentation
      城崎国際アートセンター
    • Year and Date
      2014-12-15
    • Data Source
      KAKENHI-PROJECT-26400003
  • [Presentation] Frames of the Leech lattice2011

    • Author(s)
      宗政昭弘
    • Organizer
      Workshop on Algebraic Combinatorics
    • Place of Presentation
      上海交通大学
    • Year and Date
      2011-09-15
    • Data Source
      KAKENHI-PROJECT-23340021
  • [Presentation] リーチ格子のフレームとその応用2009

    • Author(s)
      宗政昭弘
    • Organizer
      第54回代数学シンポジウム
    • Place of Presentation
      明治大学
    • Year and Date
      2009-08-06
    • Data Source
      KAKENHI-PROJECT-19540048
  • [Presentation] Twisted Grassmann graph is the block graph of a design2009

    • Author(s)
      宗政昭弘
    • Organizer
      Summer School on Designs and Codes
    • Place of Presentation
      ヒルズサンピア山形
    • Year and Date
      2009-06-21
    • Data Source
      KAKENHI-PROJECT-20540103
  • [Presentation] On some cyclotomic association schemes and strongly regular graphs2008

    • Author(s)
      宗政昭弘
    • Organizer
      Geometric and Algebraic Combinatorics 4
    • Place of Presentation
      Oisterwijk, オランダ王国
    • Year and Date
      2008-08-18
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Presentation] On some cyclotomic association schemes and strongly regular graphs2008

    • Author(s)
      宗政昭弘
    • Organizer
      Geometric and Algebraic Combinatorics 4
    • Place of Presentation
      Oisterwijk, the Netherl ands
    • Year and Date
      2008-08-18
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Presentation] On graphs with complete multipartite $\mu$-graphs2007

    • Author(s)
      Akihiro Munemasa
    • Organizer
      The 6th Slovenian lnternational Conference on Graph Theory
    • Place of Presentation
      Bled,Slovenia
    • Year and Date
      2007-06-25
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] Non-amorphous association schemes in which all nontrivial relations are strongly regular2007

    • Author(s)
      宗政 昭弘
    • Organizer
      The 22nd PNU-POSTECH Algebraic Combinatorics Seminar
    • Place of Presentation
      Pusan National University
    • Year and Date
      2007-11-24
    • Data Source
      KAKENHI-PROJECT-18340022
  • [Presentation] Mass formula for codes2007

    • Author(s)
      宗政昭弘
    • Organizer
      第19回有限群論草津セミナー
    • Place of Presentation
      草津セミナーハウス
    • Year and Date
      2007-08-03
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Presentation] Binary and ternary codes of Hadamard matrices2007

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Kunitachi One Day Seminaron Design Theory
    • Place of Presentation
      一橋大学
    • Year and Date
      2007-02-19
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] 長さ28の極値的3元自己双対符号の分類2007

    • Author(s)
      宗政 昭弘
    • Organizer
      第7回代数学と計算研究集会
    • Place of Presentation
      首都大学東京
    • Year and Date
      2007-12-05
    • Data Source
      KAKENHI-PROJECT-18340022
  • [Presentation] On graphs with complete multipartite mu-graphs2007

    • Author(s)
      宗政 昭弘
    • Organizer
      The 6th Slovenian International The 6th Slovenian International Conference on Gragh Theor
    • Place of Presentation
      Lake Bled (Slovenia)
    • Year and Date
      2007-06-25
    • Data Source
      KAKENHI-PROJECT-18340022
  • [Presentation] 長さ28の極値的3元自己双対符号の分類2007

    • Author(s)
      Akihiro Munemasa
    • Organizer
      第7回代数学と計算研究集会
    • Place of Presentation
      首都大学東京
    • Year and Date
      2007-12-05
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] On Graphs with Complete Multipartite mu-Graphs2007

    • Author(s)
      宗政昭弘
    • Organizer
      Sixth Slovenian International Conference on Graph Theory
    • Place of Presentation
      Bled, スロベニア
    • Year and Date
      2007-06-25
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Presentation] Non-amorphous association schemes in which all nontrivial relations are strongly regular2007

    • Author(s)
      Akihiro Munemasa
    • Organizer
      The 22nd PNLT-POSTECH AIgebraic Combinatorics Seminar
    • Place of Presentation
      Pusan National University
    • Year and Date
      2007-11-24
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] Mass formula for codes2007

    • Author(s)
      宗政 昭弘
    • Organizer
      第19回有眼前論草津セミナー
    • Place of Presentation
      草津セミナーハウス
    • Year and Date
      2007-08-03
    • Data Source
      KAKENHI-PROJECT-18340022
  • [Presentation] Non-amorphous association schemes in which all nontrivial relations are strongly regular2007

    • Author(s)
      宗政 昭弘
    • Organizer
      The 22^<nd> PNU-POSTECH Algebraic Combinatorics Seminar
    • Place of Presentation
      Pusan National University, 韓国
    • Year and Date
      2007-11-24
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] Codes and lattices of Hadamard matrices2007

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Design.Theory and Its Applications
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2007-06-12
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] On Graphs with Complete Multipartite mu-Graphs2007

    • Author(s)
      宗政昭弘
    • Organizer
      Korea-Japan Workshop on Algebra and Combinatorics
    • Place of Presentation
      釜山国立大学, 韓国
    • Year and Date
      2007-02-10
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Presentation] 長さ28のエクストリーマル3元自己双対符号の分類2007

    • Author(s)
      宗政昭弘
    • Organizer
      代数学と計算
    • Place of Presentation
      首都大学東京
    • Year and Date
      2007-12-05
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Presentation] On graphs with complete multipartite mu-graphs2007

    • Author(s)
      宗政昭弘
    • Organizer
      The 6th Slovenian International Conference on Graph Theory
    • Place of Presentation
      Lake Bled(Slovenia)
    • Year and Date
      2007-06-25
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Presentation] 球面上の最適配置入門2007

    • Author(s)
      Akihiro Munemasa
    • Organizer
      応用数学連携フォーラム第1回ワークショップ
    • Place of Presentation
      東北大学情報科学研究科
    • Year and Date
      2007-09-04
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] Spherical designs2007

    • Author(s)
      Akihiro Munemasa
    • Organizer
      ISM Symposium on Stochastic Models and Discrete Geometry
    • Place of Presentation
      統計数理研究所
    • Year and Date
      2007-02-27
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] Mass formula for codes2007

    • Author(s)
      Akihiro Munemasa
    • Organizer
      第19回有限群論草津セミナー
    • Place of Presentation
      草津セミナーハウス
    • Year and Date
      2007-08-03
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] On graphs with complete multipartite $\mu$-graphs2007

    • Author(s)
      宗政 昭弘
    • Organizer
      The 6^<th> Slovenian International Conference on Graph Theory
    • Place of Presentation
      Bled, Slovenia
    • Year and Date
      2007-06-25
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] Codes and lattices of Hadamard matrices2007

    • Author(s)
      宗政 昭弘
    • Organizer
      Design Theory and Its Applications
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2007-06-12
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] On graphs with complete multipartite $\mu$-graphs2007

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Korea-Japan Workshop on Algebra and Combinatorics
    • Place of Presentation
      Pusan National University
    • Year and Date
      2007-02-10
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] 長さ28の極値的3元自己双対符号の分類2007

    • Author(s)
      宗政昭弘
    • Organizer
      第7回代数学と計算研究集会
    • Place of Presentation
      首都大学東京
    • Year and Date
      2007-12-05
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Presentation] Codes and lattices of Hadamard matrices2007

    • Author(s)
      宗政 昭弘
    • Organizer
      Design Theory and lts Applications
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2007-06-12
    • Data Source
      KAKENHI-PROJECT-18340022
  • [Presentation] Combinatorial structures derived from extremal even unimodular lattices2006

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Algebra and Combinatorics
    • Place of Presentation
      Ateneo de Manila University,the Philippines
    • Year and Date
      2006-04-01
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] 球面上のデザイン2006

    • Author(s)
      Akihiro Munemasa
    • Organizer
      組合せ理論とその情報科学への応用
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2006-09-14
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] Combinatorial structures derived from extremal even unimodular lattices2006

    • Author(s)
      宗政昭弘
    • Organizer
      Algebra and Combinatorics
    • Place of Presentation
      Ateneo de Manila University, フィリピン共和国
    • Year and Date
      2006-04-01
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Presentation] Binary singly even self-dual code に関連した extremal problem2005

    • Author(s)
      Akihiro Munemasa
    • Organizer
      組合せデザインとその周辺における数理的基礎およびそれらの応用
    • Place of Presentation
      京都大学数理解析研究所共同研究集会
    • Year and Date
      2005-08-04
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] 組合せデザインとその周辺における数理的基礎およびそれらの応用2005

    • Author(s)
      宗政昭弘
    • Organizer
      An extremal problem related to binary singly even self-dual codes
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2005-08-04
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Presentation] Covering radii of extremal binary doubly even self-dual codes2005

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Asian Symposium on Computer Mathematics
    • Place of Presentation
      Korea Institute for Advanced Study
    • Year and Date
      2005-12-10
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] Covering radii of extremal binary doubly even self-dual codes The Asian Symposium on Computer Mathematics 20052005

    • Author(s)
      宗政昭弘
    • Organizer
      Korean Institute of Advanced Study
    • Place of Presentation
      韓国
    • Year and Date
      2005-12-10
    • Data Source
      KAKENHI-PROJECT-17340020
  • [Presentation] Self-orthogonaldesigns2005

    • Author(s)
      Akihiro Munemasa
    • Organizer
      代数的組み合わせ理論とその周辺
    • Place of Presentation
      京都大学数:理解析研究所共同研究集会
    • Year and Date
      2005-10-04
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] Extremal lattices and spherical designs2005

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Geometric and Algebraic Combinatorics 3
    • Place of Presentation
      Oisterwijk,the Netherlands
    • Year and Date
      2005-08-15
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] Spherical designs and extremal lattices2005

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Conference on Groups and Lie algebras
    • Place of Presentation
      上智大学
    • Year and Date
      2005-03-10
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] Difference systems of sets over finite projective spaces2005

    • Author(s)
      Akihiro Munemasa
    • Organizer
      組合せ論ミニ集会
    • Place of Presentation
      九州大学
    • Year and Date
      2005-03-07
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] Singer difference sets and difference system of sets2004

    • Author(s)
      Akihiro Munemasa
    • Place of Presentation
      ウェルサンピア伊勢
    • Year and Date
      2004-11-18
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] Association schemes and spherical designs2004

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Com2MaC Workshop on Distance-Regular Graphs and Finite Geometry
    • Place of Presentation
      釜山国立大学
    • Year and Date
      2004-07-24
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] Extremal lattices and spherical designs2004

    • Author(s)
      Akihiro Munemasa
    • Organizer
      Com2MaC Conference on Association Schemes, Codes and Designs
    • Place of Presentation
      釜山国立大学
    • Year and Date
      2004-07-21
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16340010
  • [Presentation] アソシエーションスキーム入門

    • Author(s)
      宗政昭弘
    • Organizer
      代数的組合せ論夏の学校
    • Place of Presentation
      秋保リゾートホテルクレセント
    • Year and Date
      2014-06-15 – 2014-06-16
    • Data Source
      KAKENHI-PROJECT-26400003
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  • 36.  Tanaka Hajime (50466546)
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  • 37.  末吉 豊 (80128040)
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  • 38.  GREAVES GARY
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  • 39.  TANABE Kenichiro (10334038)
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  • 40.  KAWAGOE Kenichi (50293337)
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  • 41.  ANDO Tetsuya (20184319)
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  • 42.  YAMAUCHI Hiroshi (40452213)
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  • 43.  KOMATSU Takao (70300556)
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    # of Collaborated Products: 1 results
  • 44.  AKIYAMA Shigeki (60212445)
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  • 45.  TANAKA Takaaki (60306850)
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  • 46.  HAGIWARA Manabu (80415728)
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  • 47.  Seto Michio (30398953)
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  • 48.  Sano Yoshio (20650261)
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  • 49.  YOSHIDA Masaaki (30030787)
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  • 50.  INOUE Junko (40243886)
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  • 51.  KATO Mitsuyoshi (60012481)
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  • 52.  YAMAHI Hiroyoski (60028199)
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  • 53.  TAKASHIMA Keizo (00137184)
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  • 54.  OGAWA Shigeyoshi (80101137)
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  • 55.  HOTTA Ryoushi (70028190)
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  • 56.  TAKENAKA Shigeo (80022680)
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  • 57.  HIKIDA Masato (10098593)
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  • 58.  SAWADA Hideki (30095856)
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  • 59.  MURABAYASHI Naoki (80261676)
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  • 60.  KANEKO Makoto (10007172)
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  • 61.  OBATA Nobuaki (10169360)
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  • 62.  ITOH Jin-ichi (20193493)
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  • 63.  川中 宣明 (10028219)
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  • 64.  三町 勝久 (40211594)
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  • 65.  〓田 英治 (20220626)
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  • 66.  高田 敏恵 (40253398)
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  • 68.  笛田 薫 (50253399)
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  • 69.  大塚 寛 (30203839)
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  • 70.  柳川 堯 (80029488)
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  • 71.  小西 貞則 (40090550)
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  • 72.  桜井 貴文 (60183373)
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  • 73.  大坪 紀之 (60332566)
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  • 74.  三枝崎 剛 (60584068)
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  • 75.  篠原 雅史 (70432903)
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  • 76.  吉田 知行 (30002265)
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  • 77.  松田 茂樹 (90272301)
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  • 78.  兵頭 義史 (90189811)
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  • 79.  有澤 真理子 (50312632)
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  • 80.  NAKASORA Hiroyuki
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  • 81.  HORIGUCHI Naoyuki
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    # of Collaborated Products: 0 results
  • 82.  IRIE Yuuki
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  • 83.  KOBAYASHI Yusuke
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  • 84.  LAM Ching Hung
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  • 85.  SZOLLOSI Ferenc
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    # of Collaborated Products: 0 results
  • 86.  SZOLIUST Ferenc
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    # of Collaborated Products: 0 results
  • 87.  LANSDOWN JESSE
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    # of Collaborated Products: 0 results
  • 88.  NUNEZ GUILLERMO CARLO
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