Ota Katsuhiro 太田克弘

… Alternative Names

OTA Katsuhiro 太田克弘

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Researcher Number	40213722
Other IDs
Affiliation (Current)	2025: 慶應義塾大学, 理工学部(矢上), 教授
Affiliation (based on the past Project Information) *help	2021 – 2024: 慶應義塾大学, 理工学部(矢上), 教授 2016 – 2019: 慶應義塾大学, 理工学部(矢上), 教授 2016: 慶応義塾大学, 理工, 教授 2002 – 2016: Keio University, Faculty of Science and Technology, Professor, 理工学部, 教授 2012: 慶応義塾大学, 理工学部, 教授 … More 2007 – 2008: 慶応義塾大学, 理工学部, 教授 2006 – 2007: 慶應義塾大学, 理工学研究科, 教授 2002 – 2005: 慶応義塾大学, 理工学部, 教授 1997 – 2002: 慶應義塾大学, 理工学部, 助教授 1998 – 2000: 慶応義塾大学, 理工学部, 助教授 1993 – 1996: 慶應義塾大学, 理工学部, 専任講師 1995: 慶應義塾大学, 理工学部, 講師 1992: 慶應義塾大学, 理工学部, 助手 Less
Review Section/Research Field	Principal Investigator General mathematics (including Probability theory/Statistical mathematics) / General mathematics (including Probability theory/Statistical mathematics) / Basic Section 12030:Basic mathematics-related / Foundations of mathematics/Applied mathematics Except Principal Investigator General mathematics (including Probability theory/Statistical mathematics) / General mathematics (including Probability theory/Statistical mathematics) / Geometry / Geometry / Algebra / Algebra / Foundations of mathematics/Applied mathematics / Fundamental theory of informatics / Statistical science
Keywords	Principal Investigator グラフ理論 / 三角形分割 / Triangulation / 四角形分割 / 極値問題 / 対角変形 / 閉曲面 / グラフ / Topological graph theory / representativity … More / 位相幾何学的グラフ理論 / Quadrangulation / 本型空間 / マッチング拡張性 / Hadwiger予想 / 染色数 / 全域木 / グラフマイナー / タフネス / 完全マッチング / 禁止部分グラフ / マイナー / 組合せ論 / 大域構造 / 閉路 / グラフの分割 / 緩和構造 / [2,k]-因子 / 2-因子 / ハミルトン閉路 / 1-平面グラフ / 離散数学 / 辺彩色部分グラフ / サイクル / マッチング / 疎グラフ / Spanning tree / Locally planar graph / Locally bipartite graph / Cyclic chromatic number / chromatic number / 局所平面グラフ / 局所二部グラフ / cyclic chromatic number / Hamiltonicity / Representativity / Chromatic number / 埋め込み / 向き付け不可能曲面 / ハミルトン性 / Book embedding / Mapping class group / Cycle parity / 疑似乱数 / 幾何学的群論 / 超越数 / 整数距離グラフ / 写像類群 / cycle parity / アメリカ:台湾 / 国際研究者交流 / 台湾 / アメリカ / 国際情報交換 / 森グラフ / 彩色問題 / シータグラフ / 弦付きサイクル / 辺の縮約 / 同型判定 / 多重辺 / 既約三角形分割 / データベース / 閉曲面上への埋め込み / クローフリーグラフ / 禁止マイナー / Dehn twist / toughness … More Except Principal Investigator グラフ / pooling experiment / 離散数学 / DNA library screening / 平面被覆予想 / 位相幾何学的グラフ理論 / 国際研究者交流 / Combinatorial designs / spine / 因子 / LDPC code / Bayesian Network / 閉曲面の三角形分割 / グラフの被覆 / トポロジー / アルゴリズム / 閉路 / 3次元多様体 / consecutive positives / combinatorial designs / positive detecting / cluttered ordering / RAID / Erasure resilient code / split-block design / BIB design / Heegaard splitting / 3-manifold / スパイン / cycle / factor / connectivity / graph / 連結度 / 三角形分割 / 離散凸解析 / グラフの再埋蔵 / LDPC / 国際情報交換 / 射影平面的グラフ / グラフの平面性 / 楕円曲線 / Fittingイデアル / 岩澤主予想 / 岩澤理論 / 整数論 / デーン手術 / グラフの再埋蔵構造 / グラフの識別染色数 / 距離空間 / 三角形分割の彩色 / 識別染色数 / 閉曲面上のグラフ / 識別彩色 / game theory / mathematical economics / algorithms / discrete convex analysis / ゲーム理論 / 数理経済学 / symplectic manifold / topological invariant / hyperbolic manifold / Seifert fibered space / エゴード分解 / シンプレクティック多様体 / 位相不変量 / 双曲多様体 / ザイフェルト多様体 / ヘゴード分解 / Convex-concave procedure / Baysean Network / decoding algorithm / convex-concave procedure / independence number / decree condition / 直径 / リスト彩色数 / 彩色数 / 成分因子 / 孤立点 / 分割 / (g, f)-因子 / 因子分解 / 次数条件 / 独立数 / 次数 / projective-planar graphs / planarity of graphs / coverings of graphs / 1-2-∞ Conjecture / Planar Cover Conjecture / topological graph theory / 1-2-∞予想 / wrappedρ-labelling / Combinatiorial designs / pooling design / Quorum system / wrapped ρ-labelling / grid design / DNA Library screening / efficiency factor / optimality / cyclically resolvable design / balanced incomplete split-block design / resolvable BIB design / mixed t-design / Split-block design / nested BIB design / Poincare conjecture / Dehn surgery / DS-deagram / Dehn手術 / framed link / Heegaard分解 / ヘゴール分解 / 三次元多様体 / ポアンカレ予想 / へゴール分解 / planar graph / bipartite graph / book embedding / degree sum / 超魔法的ラベル付け / 巡回セールスマン問題 / 正則因子 / 関路 / 彩色 / ブロック・デザイン / 差集合 / 2型グラフ / 本型埋め込み / 次数和 / network flow / straight-line embedding / tree / graph theory / quadrangulation / triangulation / combinatorics / discrete geometry / 単位距離グラフ / ハミルトングラフ / 刑務所問題 / 照明問題 / 組み合せ論 / 分割問題 / 閉包 / Johnsonスキーム / ハミルトン性 / サイクル / ネットワークフロー / 直線描画 / 木 / グラフ理論 / 四角形分割 / 組合せ論 / 離散幾何 / 安定割当 / 安定マッチング / 安定結婚 / ハンガリー / 配属問題 / 戦略的頑健性 / マッチング / 資源配分問題 / 離散構造 / 離散最適化 / データベース / グラフ理論支援ソフトウェア / グラフの彩色 / グラフの再埋蔵理論 / カナダ:中国:アメリカ / イギリス:アメリカ:韓国 / イギリス / Selmer群 / ドイツ：イギリス / Fitting イデアル / Selmer 群 / Tate Shafarevich群 / イデアル類群 / セルマー群 / conflict-avoiding code / Fingerprint code / ベイジアンネットワー / 遺伝子情報解析 / LDPC符号 / Steiner quadruple system / ベイジアンネットワーク / 組合せデザイン / CCCP / BP / 確率伝搬法 / positive detecting algorithm / グループテスト / symplectic geometry / Dirac structure / deformation quantization / Parabolic geometry / Floer homology / Lie algebroid / 指数定理 / 非可換微分幾何学 / イギリス:フランス:ベルギー:中国:コロンビア / 岩沢理論 / 量子コホモロジー / オーストラリア:アメリカ:イタリア / スペクトル理論 / 擬微分作用素 / regularization / 中国:スイス:アメリカ / 非可換ゲージ理論 / ポアソン幾何学 / シンプレクティック幾何学 / 変形量子化問題 / 量子化問題 / 超弦理論 / ジャーブ / 変形量子化 / 非可換幾何学 / Beleief Propagation / 非収束 / Tanner graph / group testing / Belief Propagation / 非収束性 / 有理点 / p進L関数 / Stickelberger元 / Euler系 / ドイツ:韓国 / Kolyvagin系 / セルオートマトン / 既約多項式 / Mersenne Twister / 疑似乱数 / 局面の三角形分割 / ヘゴ-ド分解 / 線形回帰数列 / 数論的量子カオス / complexity / 正規数 / 算術的整関数 / 代数的独立 / マーラーの方法 / 超越数 / 接コモホロジー / 葉層構造 / 剛性 / 群作用 / 不分岐ガロア拡大 / 非可換単純群 / 対称群 / ガロア群 / 2項係数 / 組ひも Less

グラフの大域構造に着目した極値問題の研究Principal Investigator
- Principal Investigator
  
  太田克弘
- Project Period (FY)
  2022 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 12030:Basic mathematics-related
- Research Institution
  Keio University
Development of Extremal Graph Theory for Sparse GraphsPrincipal Investigator
- Principal Investigator
  
  Ota Katsuhiro
- Project Period (FY)
  2016 – 2019
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Foundations of mathematics/Applied mathematics
- Research Institution
  Keio University
Synthetic research on topological graph theory centered around re-embeddings of graphs
- Principal Investigator
  
  NEGAMI Seiya
- Project Period (FY)
  2013 – 2016
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Foundations of mathematics/Applied mathematics
- Research Institution
  Yokohama National University
Deep Studies on Allocation Problems with Discrete Structures
- Principal Investigator
  
  Tamura Akihisa
- Project Period (FY)
  2012 – 2016
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Fundamental theory of informatics
- Research Institution
  Keio University
Integrated research of extremal problems on graph factors, minors and subgraphsPrincipal Investigator
- Principal Investigator
  
  Ota Katsuhiro
- Project Period (FY)
  2012 – 2016
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
Research on graphs densely embedded on a closed surfacePrincipal Investigator
- Principal Investigator
  
  OTA Katsuhiro
- Project Period (FY)
  2011 – 2012
- Research Category
  
  Grant-in-Aid for Challenging Exploratory Research
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
New development of Iwasawa theory and its applications
- Principal Investigator
  
  KURIHARA Masato
- Project Period (FY)
  2009 – 2013
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Algebra
- Research Institution
  Keio University
Organized research on topological graph theory centered around re-embeddings ofgraphs
- Principal Investigator
  
  NEGAMI Seiya
- Project Period (FY)
  2009 – 2012
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Yokohama National University
Research on graphs characterized by forbidden minorsPrincipal Investigator
- Principal Investigator
  
  OTA Katsuhiro
- Project Period (FY)
  2008 – 2011
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
Development from Poisson Geometry to Noncommutative Differential Geometry via Integrating of Geometry and Physics
- Principal Investigator
  
  MAEDA Yoshiaki
- Project Period (FY)
  2006 – 2009
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Research Field
  
  Geometry
- Research Institution
  Keio University
Combinatorial structures and algorithms commonly included in codes and pooling designs for genetic experiments
- Principal Investigator
  
  JIMBO Masakazu
- 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
  Nagoya University
Refined Iwasawa theory and the zeta functions
- Principal Investigator
  
  KURIHARA Masato
- Project Period (FY)
  2005 – 2008
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Algebra
- Research Institution
  Keio University
Organizational study toward the final solution to Planar Cover Conjecture
- Principal Investigator
  
  NEGAMI Seiya
- 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
  Yokohama National University
非周期的な挙動を示す非収束ベイジアンネットワークとグラフ構造
- Principal Investigator
  
  神保雅一
- Project Period (FY)
  2005 – 2007
- Research Category
  
  Grant-in-Aid for Exploratory Research
- Research Field
  
  Statistical science
- Research Institution
  Nagoya University
Efficient algorithms of pooling experiments for gene analysis by utilizing group testing and Bayesian network
- Principal Investigator
  
  JIMBO Masakazu
- Project Period (FY)
  2003 – 2005
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Nagoya University
  Keio University
Research on 3-manifolds by combinatorial and constructive methods
- Principal Investigator
  
  ISHLI Ippei
- Project Period (FY)
  2003 – 2004
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Keio University
Research on Algorithms in Discrete Convex Analysis
- Principal Investigator
  
  TAMURA Akihisa
- Project Period (FY)
  2003 – 2005
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  KEIO UNIVERSITY
  Kyoto University
Organized study toward the solution of Planar Cover Conjecture
- Principal Investigator
  
  NEGAMI Seiya
- Project Period (FY)
  2002 – 2004
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Yokohama National University
Embedding and Partition of Graphs
- Principal Investigator
  
  ENOMOTO Hikoe
- Project Period (FY)
  2002 – 2004
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  HIROSHIMA UNIVERSITY
  Keio University
Applications of combinatorial designs to information transmission and DNA library screening
- Principal Investigator
  
  JIMBO Masakazu
- Project Period (FY)
  2001 – 2003
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
Research on Topological Aspects of CombinatoricsPrincipal Investigator
- Principal Investigator
  
  OTA Katsuhiro
- Project Period (FY)
  2001 – 2002
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
Research on Combinatorial GeometryPrincipal Investigator
- Principal Investigator
  
  OTA Katsuhiro
- Project Period (FY)
  1999 – 2000
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
Combinatorial Methods for Discrete Geometry
- Principal Investigator
  
  SAITO Akira
- Project Period (FY)
  1998 – 2000
- Research Category
  
  Grant-in-Aid for Scientific Research (A).
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  NIHON UNIVERSITY
Partition and coloring of a graph
- Principal Investigator
  
  ENOMOTO Hikoe
- Project Period (FY)
  1998 – 1999
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
Studies on Combinatorial Structures of 3-Manifolds
- Principal Investigator
  
  ISHII Ippei
- Project Period (FY)
  1998 – 1999
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Keio University
Optimality and Constructions of cyclically resolbable BIB designs and split-block designs
- Principal Investigator
  
  JIMBO Masakazu
- 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
  Keio University
分散並列システム上でのモンテカルロ法と分散疑似乱数発生
- Principal Investigator
  
  榎本彦衛
- Project Period (FY)
  1997
- Research Category
  
  Grant-in-Aid for Exploratory Research
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
Research on Geometric and Combinatorial StructuresPrincipal Investigator
- Principal Investigator
  
  OTA Katsuhiro
- Project Period (FY)
  1997 – 1998
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
曲面上のグラフの組合せ論的性質に関する研究Principal Investigator
- Principal Investigator
  
  太田克弘
- Project Period (FY)
  1996
- Research Category
  
  Grant-in-Aid for Encouragement of Young Scientists (A)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
超越数論におけるマーラーの方法とその応用
- Principal Investigator
  
  塩川守賢
- Project Period (FY)
  1995
- Research Category
  
  Grant-in-Aid for General Scientific Research (B)
- Research Field
  
  Algebra
- Research Institution
  Keio University
多様体の位相構造と幾何構造の研究
- Principal Investigator
  
  石井一平
- Project Period (FY)
  1995
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Keio University
組合せ論の研究
- Principal Investigator
  
  榎本彦衛
- Project Period (FY)
  1995
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University
幾何学的変換群論
- Principal Investigator
  
  金井雅彦
- Project Period (FY)
  1994
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Keio University
ガロア理論と関連諸問題の研究
- Principal Investigator
  
  小松建三
- Project Period (FY)
  1993
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  Keio University
離散数学の研究
- Principal Investigator
  
  ENOMOTO Hikoe
- Project Period (FY)
  1992
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Keio University

[Journal Article] Some conditions for hamiltonian cycles in 1-tough (K_2\cup kK_1)-free graphs2024
- Author(s)
  K. Ota and M. Sanka
- Journal Title
  
  Discrete Mathematics
  
  Volume: 347 Issue: 3 Pages: 113841-113841
- DOI
  10.1016/j.disc.2023.113841
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K03404
[Journal Article] Minimum degree conditions for the existence of a sequence of cycles whose lengths differ by one or two2023
- Author(s)
  S. Chiba, K. Ota and T. Yamashita
- Journal Title
  
  Journal of Graph Theory
  
  Volume: 103 Issue: 2 Pages: 340-358
- DOI
  10.1002/jgt.22921
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K03404, KAKENHI-PROJECT-16K05262, KAKENHI-PROJECT-20K03720, KAKENHI-PROJECT-23K20225
[Journal Article] Hamiltonian cycles in 2-tough 2K_2-free graphs2022
- Author(s)
  K. Ota and M. Sanka
- Journal Title
  
  Journal of Graph Theory
  
  Volume: 101 Issue: 4 Pages: 769-781
- DOI
  10.1002/jgt.22852
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K03404
[Journal Article] Graph grabbing game on totally-weighted graphs2022
- Author(s)
  N. Matsumoto, R. Moriyama and K. Ota
- Journal Title
  
  Discrete Applied Mathematics
  
  Volume: 322 Pages: 384-390
- DOI
  10.1016/j.dam.2022.09.007
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K03404
[Journal Article] Integrality of Subgradients and Biconjugates of Integrally Convex Functions2020
- Author(s)
  Murota, K., Tamura, A.
- Journal Title
  
  Optimization Letters
  
  Volume: 14 Issue: 1 Pages: 195-208
- DOI
  10.1007/s11590-019-01501-1
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K00023, KAKENHI-PROJECT-26280004, KAKENHI-PROJECT-17H00761, KAKENHI-PROJECT-16H03952
[Journal Article] Color degree sum conditions for properly colored spanning trees in edge-colored graphs2020
- Author(s)
  M.Kano, S. Maezawa, K. Ota, M. Tsugaki and T. Yamashita
- Journal Title
  
  Discrete Mathematics
  
  Volume: 343 Issue: 11 Pages: 112042-112042
- DOI
  10.1016/j.disc.2020.112042
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K03597, KAKENHI-PROJECT-20K14353, KAKENHI-PROJECT-20J15332, KAKENHI-PROJECT-16H03952
[Journal Article] Disjoint chorded cycles of the same length2015
- Author(s)
  Guantao Chen, Ronald J. Gould, Kazuhide Hirohata, Katsuhiro Ota and Songling Shan
- Journal Title
  
  SIAM Journal on Discrete Mathematics
  
  Volume: 29 Issue: 2 Pages: 1030-1041
- DOI
  10.1137/130929837
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24340021
[Journal Article] Hadwiger's conjecture for degree sequences2015
- Author(s)
  Guantao Chen and Katsuhiro Ota
- Journal Title
  
  Journal of Combinatorial Theory, Series B
  
  Volume: 114 Pages: 247-249
- DOI
  10.1016/j.jctb.2015.03.006
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24340021
[Journal Article] Edge Proximity Conditions for Extendability in Planar Triangulations2015
- Author(s)
  J. Fujisawa and K. Ota
- Journal Title
  
  Journal of Graph Theory
  
  Volume: 80 Issue: 1 Pages: 1-11
- DOI
  10.1002/jgt.21827
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26800085, KAKENHI-PROJECT-24340021
[Journal Article] Forbidden induced subgraphs for toughness2013
- Author(s)
  K. Ota and G. Sueiro
- Journal Title
  
  Journal of Graph Theory
  
  Volume: 73 Issue: 2 Pages: 191-202
- DOI
  10.1002/jgt.21667
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24340021
[Journal Article] Forbidden induced subgraphs for perfect matchings2013
- Author(s)
  K. Ota
- Journal Title
  
  Graphs and Combinatorics
  
  Volume: 29 Pages: 289-299
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24340021
[Journal Article] Forbidden subgraphs for near perfect matchings2013
- Author(s)
  K. Ota, K. Ozeki, G. Sueiro
- Journal Title
  
  Discrete Mathematics
  
  Volume: (掲載決定) Issue: 11 Pages: 1267-1280
- DOI
  10.1016/j.disc.2013.01.020
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-10J04633, KAKENHI-PROJECT-24340021
[Journal Article] Hamiltonian cycles with all small even chords2012
- Author(s)
  Guantao Chen, Katsuhiro Ota, Akira Saito and Yi Zhao
- Journal Title
  
  Discrete Mathematics
  
  Volume: 312 Pages: 1226-1240
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23654041
[Journal Article] Spanning trees in 3-connected K_{3,t}-minor-free graphs2012
- Author(s)
  Katsuhiro Ota, Kenta Ozeki
- Journal Title
  
  J. Combin. Theory, Ser. B
  
  Volume: 102 no.5 Pages: 1179-1188
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] Hamiltonian cycles with all small even chords2012
- Author(s)
  G. Chen, K. Ota, A. Saito and Y. Zhao
- Journal Title
  
  Discrete Math
  
  Volume: 312 Pages: 1226-1240
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23654041
[Journal Article] Spanning trees in 3-connected K_<3,t>-minor-free graphs2012
- Author(s)
  K. Ota
- Journal Title
  
  Journal of Combinatorial Theory, Series B
  
  Volume: 102 Pages: 1179-1188
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24340021
[Journal Article] Maximal K_3's and Hamiltonicity of 4-connected claw-free graphs2012
- Author(s)
  J. Fujisawa and K. Ota
- Journal Title
  
  J. Graph Theory
  
  Volume: 70 Pages: 40-53
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] Book embedding of toroidal bipartite graphs2012
- Author(s)
  Atsuhiro Nakamoto, Katsuhiro Ota, Kenta Ozeki
- Journal Title
  
  SIAM J. Discrete Math
  
  Volume: 26 no.2 Pages: 661-669
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] Maximal K_3's and Hamiltonicity of 4-connected claw-free graphs2012
- Author(s)
  Jun Fujisawa, Katsuhiro Ota
- Journal Title
  
  J. Graph Theory
  
  Volume: 70 no.1 Pages: 40-53
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] Akira Saito and Yi Zhao, Hamiltonian cycles with all small even chords2012
- Author(s)
  Guantao Chen, Katsuhiro Ota
- Journal Title
  
  Discrete Math
  
  Volume: 312 no.6 Pages: 1226-1240
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] N-flips in even triangulations on the torus and Dehn twists preserving monodromies2011
- Author(s)
  Yusuke Higuchi, Atsuhiro Nakamoto, Katsuhiro Ota, Tadashi Sakuma
- Journal Title
  
  Discrete Math
  
  Volume: 311 no.13 Pages: 1128-1135
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] Toughness of K_<a, t>-minor-free graphs. Electron2011
- Author(s)
  G. Chen, Y. Egawa, K. Kawarabayashi, B. Mohar and K. Ota
- Journal Title
  
  J. Combin
  
  Volume: 18 Pages: 148-6
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] The existence of a 2-factor in K_<1, n>-free graphs with large connectivity and large edge-connectivity2011
- Author(s)
  R. E. L. Aldred, Y. Egawa, J. Fujisawa, K. Ota and A. Saito
- Journal Title
  
  J. Graph Theory
  
  Volume: 68 Pages: 77-89
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] The existence of a 2-factor in K_{1,n}- free graphs with large connectivity and large edge-connectivity2011
- Author(s)
  R.E.L. Aldred, Yoshimi Egawa, JunFujisawa, Katsuhiro Ota, Akira Saito
- Journal Title
  
  J. Graph Theory
  
  Volume: 68 Pages: 77-89
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] Forbidden triples for perfect matchings2011
- Author(s)
  Katsuhiro Ota, Michael D. Plummer, Akira Saito
- Journal Title
  
  J. Graph Theory
  
  Volume: 67 no.3 Pages: 250-259
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] Toughness of K_{a,t}-minor-free graphs2011
- Author(s)
  Guantao Chen, Yoshimi Egawa, Ken-ichi Kawarabayashi, Bojan Mohar, Katsuhiro Ota
- Journal Title
  
  Elec. J. Combin
  
  Volume: 18
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] A note on total excess of spanning trees, AKCE Intern2011
- Author(s)
  Yukichika Ohnishi, Katsuhiro Ota, Kenta Ozeki
- Journal Title
  
  J. Graphs Combin
  
  Volume: 8 no.1 Pages: 97-103
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] Forbidden induced subgraphs for star-free graphs2011
- Author(s)
  Jun Fujisawa, Katsuhiro Ota, Kenta Ozeki, Gabriel Sueiro
- Journal Title
  
  Discrete Math
  
  Volume: 311 no.21 Pages: 2475-2484
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] Forbidden induced subgraphs for star-free graphs2011
- Author(s)
  J. Fujisawa, K. Ota, K. Ozeki and G. Sueiro
- Journal Title
  
  Discrete Math
  
  Volume: 311 Pages: 2475-2484
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] Spanning trees with bounded total excess2011
- Author(s)
  Hikoe Enomoto, Yukuchika Ohnishi, Katsuhiro Ota
- Journal Title
  
  Ars Combin
  
  Volume: 102 Pages: 289-295
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] Forbidden triples for perfect matchings2011
- Author(s)
  K. Ota, M. D. Plummer and A. Saito
- Journal Title
  
  J. Graph Theory
  
  Volume: 67 Pages: 250-259
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] Forbidden subgraphs and the existence of spanning k-trees2010
- Author(s)
  K.Ota
- Journal Title
  
  Discrete Math.
  
  Volume: 310 Pages: 3506-3511
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] Forbidden subgraphs and the existence of spanning k-trees2010
- Author(s)
  K.Ota, T.Sugiyama
- Journal Title
  
  Discrete Math. 310
  
  Pages: 3506-3511
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] Forbidden subgraphs and the existence of spanning k-trees2010
- Author(s)
  Katsuhiro Ota, Takeshi Sugiyama
- Journal Title
  
  Discrete Math
  
  Volume: 310 no.24 Pages: 3506-3511
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] Lagrangian Floer theory on compact toric manifolds. I.2010
- Author(s)
  Fukaya, Kenji; Oh, Yong-Geun; Ohta, Hiroshi; Ono, Kaoru
- Journal Title
  
  Duke Math. J. 151, no.1
  
  Pages: 23-174
- NAID
  120002598755
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18204006
[Journal Article] The distinguishing number of 4-regular quadrangulations on the torus2009
- Author(s)
  Tomotaka Fukuda
- Journal Title
  
  Yokohama Mathematical Journal 55
  
  Pages: 47-70
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] 3-trees with few vertices of degree 3 in circuit graphs2009
- Author(s)
  A. Nakamoto, Y. Oda, K. Ota
- Journal Title
  
  Discrete Mathematics 309
  
  Pages: 666-672
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] Canonical models of filtered A∞-algebras and Morse complexes.2009
- Author(s)
  Fukaya, Kenji; Oh, Yong-Geun; Ohta, Hiroshi; Ono, Kaoru
- Journal Title
  
  New perspectives and challenges in symplectic field theory, CRM Proc. Lecture Notes(Amer. Math. Soc.) 49
  
  Pages: 201-227
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18204006
[Journal Article] 3-trees with few vertices of degree 3 in circuit graphs.2009
- Author(s)
  Nakamoto, Atsuhiro; Oda, Yoshiaki; Ota, Katsuhiro
- Journal Title
  
  Discrete Math. 309, no.4
  
  Pages: 666-672
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18204006
[Journal Article] 3-trees with few vertices of degree 3 in circuit graphs2009
- Author(s)
  Atsuhiro Nakamoto, Yoshiaki Oda, Katsuhiro Ota
- Journal Title
  
  Discrete Math
  
  Volume: 309 no.4 Pages: 666-672
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] 3-trees with few vertices of degree 3 in circuit graphs2009
- Author(s)
  A. Nakamoto, Y. Oda and K. Ota
- Journal Title
  
  Discrete Math
  
  Volume: 309 Pages: 666-672
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] 3-Trees with a few vertices of degree 3 in circuit graphs2009
- Author(s)
  Katsuhiro Ota
- Journal Title
  
  Discrete Math
  
  Volume: 309 no.4 Pages: 666-672
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340022
[Journal Article] On 2-factors in r-connected {K1, 4, P4}-free graphs2008
- Author(s)
  Y.Egawa, J.Fujisawa, S.Fujita, K.Ota
- Journal Title
  
  Tokyo J.Math. 31
  
  Pages: 415-420
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] Forbidden subgraphs and the existence of paths and cycles passing through specified vertices2008
- Author(s)
  J. Fujisawa, K. Ota, T. Sugiyama, M. Tsugaki
- Journal Title
  
  Discrete Mathematics 308
  
  Pages: 6111-6114
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] Forbidden subgraphs and the existence of paths and cycles passing through specified vertices.2008
- Author(s)
  Fujisawa, Jun; Ota, Katsuhiro; Sugiyama, Takeshi; Tsugaki Masao
- Journal Title
  
  Discrete Math. 308
  
  Pages: 6111-6114
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18204006
[Journal Article] 3-Connected planar graphs are 2-distinguishable2008
- Author(s)
  Tomotaka Fukuda
- Journal Title
  
  Yokohama Mathematical Journal 54
  
  Pages: 143-153
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17340025
[Journal Article] Forbidden subgraphs and the existence of paths and cycles passing through specified vertices2008
- Author(s)
  J.Fujisawa, K.Ota, T.Sugiyama, M.Tsugaki
- Journal Title
  
  Discrete Math. 308
  
  Pages: 6111-6114
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] On 2-factors in r-connected{K_<1, k>, P_4}-free graphs2008
- Author(s)
  Y. Egawa, J. Fujisawa, S. Fujita and K. Ota
- Journal Title
  
  Tokyo J. Math
  
  Volume: 31 Pages: 415-420
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] On 2-factors in r-connected( K1, k, P4)-free graphs.2008
- Author(s)
  Egawa, Yoshimi; Fujisawa, Jun; Fujita, Shinya; Ota Katsuhiro
- Journal Title
  
  Tokyo J. Math. 31, no.2
  
  Pages: 415-420
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18204006
[Journal Article] 3-Connected planar graphs are 2-distinguishable with few exceptions2008
- Author(s)
  Tomotaka Fukuda, Seiya Negami and Thomas W. Tucker
- Journal Title
  
  Yokohama Math. J. 54 no.2
  
  Pages: 143-153
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17340025
[Journal Article] On 2-factors in r-connected {K_<1.4>, P_4}-free graphs2008
- Author(s)
  Y. Egawa, J. Fujisawa, S. Fujita, K. Ota
- Journal Title
  
  Tokyo Journal of Mathematics 31
  
  Pages: 415-420
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] K_<1, 3>-factors in graphs2008
- Author(s)
  Y. Egawa, S. Fujita, K. Ota
- Journal Title
  
  Discrete Mathematics 308
  
  Pages: 5965-5973
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] K1, 3-factors in graphs.2008
- Author(s)
  Egawa, Yoshimi; Fujita, Shinya; Ota, Katsuhiro
- Journal Title
  
  Discrete Math 308
  
  Pages: 5965-5973
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18204006
[Journal Article] K_6-Minors in triangu-lations on the double torus. Proceedings of the 38th Southeastern International Conference on Combinatorics, Graph Theory and Computings2007
- Author(s)
  Atsuhiro NakamotoAtsuhiro Nakamoto, Yoshiaki Oda and Katsuhiro Ota
- Journal Title
  
  Congr. Numer. 188
  
  Pages: 150-160
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17340025
[Journal Article] Independence number and vertex-disjoint cycles2007
- Author(s)
  Y.Egawa, H.Enomoto, S.Jendrol, K.Ota, I.Schiermeyer
- Journal Title
  
  Discrete Math. 307
  
  Pages: 1493-1498
- Data Source
  KAKENHI-PROJECT-18340024
[Journal Article] The Chvatal-Erdos condition and 2-factors with a specified number of components.2007
- Author(s)
  Chen, Guantao; Gould, Ronald J. ; Kawarabayashi, Ken-ichi; Ota, Katsuhiro; Saito, Akira; Schiermeyer, Ingo
- Journal Title
  
  Discuss. Math. Graph Theory 27,no.3
  
  Pages: 401-407
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18204006
[Journal Article] Independence number and vertex-disjoint cycles2007
- Author(s)
  Y.Egawa, H.Enomoto, S.Jendrol, K.Ota, I.Schiermeyer
- Journal Title
  
  Discrete Math. 307
  
  Pages: 1493-1498
- Data Source
  KAKENHI-PROJECT-17650080
[Journal Article] A pair of forbidden subgraphs and perfect matchings2006
- Author(s)
  S.Fujita, K.Kawarabayashi, C.L.Lucchesi, K.Ota, M.D.Plummer, A.Saito
- Journal Title
  
  J. Combin. Theory B 96
  
  Pages: 315-324
- Data Source
  KAKENHI-PROJECT-18340024
[Journal Article] A steepest descent algorithm for M-convex functions on jump systems2006
- Author(s)
  Murota, K.
- Journal Title
  
  IEICE Trans.Fundamentals vol.E89-A
  
  Pages: 1160-1165
- NAID
  110007502826
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-15540118
[Journal Article] Weighted Ramsey problem. Australas2006
- Author(s)
  Jun Fujisawa and Katsuhiro Ota
- Journal Title
  
  J. Combin 34
  
  Pages: 331-342
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17340025
[Journal Article] A steepest descent algorithm for M-convex functions on jump systems2006
- Author(s)
  Murota, K.
- Journal Title
  
  IEICE Trans. Fundanentals E89-A
  
  Pages: 1160-1165
- NAID
  110007502826
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-15540118
[Journal Article] A pair of forbidden subgraphs and perfect matchings2006
- Author(s)
  S.Fujita, K.Kawarabayashi, C.L.Lucchesi, K.Ota, M.D.Plummer, A.Saito
- Journal Title
  
  J. Combin. Theory B 96
  
  Pages: 315-324
- Data Source
  KAKENHI-PROJECT-17650080
[Journal Article] A σ_k type condition for heavy cycles in weighted graphs2005
- Author(s)
  H.Enomoto, J.Fujisawa, K.Ota
- Journal Title
  
  Ars Combinatoria 76
  
  Pages: 225-232
- Data Source
  KAKENHI-PROJECT-15340035
[Journal Article] Use of primal-dual technique in the network algorithm for two-way contingency tables2005
- Author(s)
  T.Suzuki, S.Aoki, K.Murota
- Journal Title
  
  Japan Journal of Industrial and Applied Mathematics 22・1
  
  Pages: 133-145
- Data Source
  KAKENHI-PROJECT-15540118
[Journal Article] Discrete fixed point theorem reconsidered2005
- Author(s)
  T.Iimura, K.Murota, A.Tamura
- Journal Title
  
  Journal of Mathematical Economics 41
  
  Pages: 1030-1036
- Data Source
  KAKENHI-PROJECT-15540118
[Journal Article] On 3-coloring of plane triangulations2005
- Author(s)
  A.Nakamoto, K.Ota, M.Watanabe
- Journal Title
  
  Ars Combinatoria 75
  
  Pages: 157-162
- Data Source
  KAKENHI-PROJECT-15340035
[Journal Article] On 3-coloring of plane triangulations2005
- Author(s)
  Atsuhiro Nakamoto, Katsuhiro Ota and Mamoru Watanabe
- Journal Title
  
  Ars Combin 75
  
  Pages: 157-162
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17340025
[Journal Article] Ore-type degree condition for heavy paths in weighted graphs2005
- Author(s)
  H.Enomoto, J.Fujisawa, K.Ota
- Journal Title
  
  Discrete Math. 300
  
  Pages: 100-109
- Data Source
  KAKENHI-PROJECT-15340035
[Journal Article] Ore-type degree condition for heavy paths in weighted graphs2005
- Author(s)
  H.Enomoto, J.Fujisawa, K.Ota
- Journal Title
  
  Discrete Math. 300
  
  Pages: 100-109
- Data Source
  KAKENHI-PROJECT-17650080
[Journal Article] A capacity scaling algorithm for M-convex submodular flow2005
- Author(s)
  S.Iwata, S.Moriguchi, K.Murota
- Journal Title
  
  Mathematical Programming 103・1
  
  Pages: 181-202
- NAID
  110002812004
- Data Source
  KAKENHI-PROJECT-15540118
[Journal Article] Chromatic numbers and cycle parities of quadrangulations on nonorientable closed surfaces2004
- Author(s)
  A.Nakamoto, S.Negami, K.Ota
- Journal Title
  
  Lecture Notes in Physics 285
  
  Pages: 211-218
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-15540091
[Journal Article] On minimally 3-connected graphs on a surface2004
- Author(s)
  K.Ota
- Journal Title
  
  AKCE Int.J.Graphs Comb. 1, no.1
  
  Pages: 29-33
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-14340032
[Journal Article] On minimally 3-connected graphs on a surface2004
- Author(s)
  K.Ota
- Journal Title
  
  A KCE International J.of Graphs and Combinatorics 1
  
  Pages: 29-33
- Data Source
  KAKENHI-PROJECT-14540134
[Journal Article] Planar triangulations which quadrangulate other surfaces2004
- Author(s)
  A.Nakamoto, S.Negami, K.Ota, J.Siran
- Journal Title
  
  European J.Combin. 25
  
  Pages: 817-833
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-15540091
[Journal Article] On minimally 3-connected graphs on a surface2004
- Author(s)
  K.Ota
- Journal Title
  
  AKCE Int.J.Graphs Comb. 1
  
  Pages: 29-33
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-15540091
[Journal Article] Chromatic numbers and cycle parities of quadrangulations on nonorientable closed surfaces2004
- Author(s)
  A.Nakamoto, S.Negami, K.Ota
- Journal Title
  
  Discrete Math. 285
  
  Pages: 211-218
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-15540091
[Journal Article] On minimally 3-connected graphs on a surface2004
- Author(s)
  K.Ota
- Journal Title
  
  AKCE Int. J. Graphs Comb. 1
  
  Pages: 29-33
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-14340032
[Journal Article] On minimally 3-connected graphs on a surface2002
- Author(s)
  K.Ota
- Journal Title
  
  Notes Discrete Math. (Elsevier, Amsterdam) 11
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-14340032
[Journal Article] On minimally 3-connected graphs on a surface2002
- Author(s)
  K.Ota
- Journal Title
  
  Notes Discrete Math. 11
  
  Pages: 1-1
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-14340032
[Journal Article] Forbidden triples for perfect matchings
- Author(s)
  K.Ota, M.D.Plummer, A.Saito
- Journal Title
  
  to appear in J.Graph Theory.
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] A steepest descent algorithm for M-convex functions on jump systems
- Author(s)
  K.Murota, K.Tanaka
- Journal Title
  
  IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences 発表予定(未定)
- NAID
  110007502826
- Data Source
  KAKENHI-PROJECT-15540118
[Journal Article] Spanning trees with bounded total excess
- Author(s)
  H.Enomoto, Y.Ohnishi, K.Ota
- Journal Title
  
  Ars Combinatoria (掲載決定)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Journal Article] A capacity scaling algorithm for M-convex submodular flow
- Author(s)
  S.Iwata, S.Moriguchi, K.Murota
- Journal Title
  
  Mathematical Programming (発表予定)
- NAID
  110002812004
- Data Source
  KAKENHI-PROJECT-15540118
[Journal Article] Forbidden triples for perfect matchings
- Author(s)
  K.Ota
- Journal Title
  
  J.Graph Theory
  
  Volume: (掲載確定)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] An Ore-type condition for 2-edge-connected [2,k]-factors in 2-connected graphs2025
- Author(s)
  山下登茂紀, 太田克弘
- Organizer
  日本数学会2025年度年会（応用数学分科会）
- Data Source
  KAKENHI-PROJECT-22K03404
[Presentation] グラフのハミルトン性とタフネスおよび禁止誘導部分パスの条件2024
- Author(s)
  三家雅弘，太田克弘
- Organizer
  日本数学会2024年度年会（応用数学分科会）
- Data Source
  KAKENHI-PROJECT-22K03404
[Presentation] 極値グラフ理論のある問題について2024
- Author(s)
  太田克弘
- Organizer
  離散数学とその応用研究集会2024 (JCCA 2024)
- Data Source
  KAKENHI-PROJECT-22K03404
[Presentation] グラフの2-連結部分グラフへの分割問題に対する新たな不変量2023
- Author(s)
  太田克弘，鹿島柾，古谷倫貴
- Organizer
  応用数学合同研究集会2023
- Data Source
  KAKENHI-PROJECT-22K03404
[Presentation] Theta subgraphs2023
- Author(s)
  太田克弘
- Organizer
  江川嘉美先生70歳記念研究集会
- Data Source
  KAKENHI-PROJECT-22K03404
[Presentation] (K_2\cup kK_1)-free グラフのハミルトン性2022
- Author(s)
  三家雅弘，太田克弘
- Organizer
  応用数学合同研究集会2022
- Data Source
  KAKENHI-PROJECT-22K03404
[Presentation] Spanning plane subgraphs of 1-plane graphs2018
- Author(s)
  Katsuhiro Ota
- Organizer
  6th Pacific Workshop on Discrete Mathematics, Hawaii Tokai International College, Hawaii, USA
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16H03952
[Presentation] Roman dominating sequences in graphs2018
- Author(s)
  Yutaro Fukagawa, Katsuhiro Ota
- Organizer
  6th Pacific Workshop on Discrete Mathematics, Hawaii Tokai International College, Hawaii, USA
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16H03952
[Presentation] Small theta subgraphs in sparse graphs2017
- Author(s)
  Katsuhiro Ota
- Organizer
  2017 Joint Mathematical Meetings
- Place of Presentation
  Atlanta (USA)
- Year and Date
  2017-01-06
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24340021
[Presentation] Small theta subgraphs in sparse graphs2017
- Author(s)
  K. Ota
- Organizer
  2017 Joint Mathematical Meetings, AMS Special Session on Topics in Graph Theory
- Place of Presentation
  Atlanta (USA)
- Year and Date
  2017-01-06
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16H03952
[Presentation] Vertex-disjoint even cycles of the same length2016
- Author(s)
  K. Ota, Y. Egawa, S. Fujita, T. Sakuma
- Organizer
  ACCOTA 2016, International Workshop on Combinatorial and Computational Aspects of Optimization, Topology and Algebra
- Place of Presentation
  Los Cabos (Mexico)
- Year and Date
  2016-11-28
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16H03952
[Presentation] グラフのρ-coloringについて2015
- Author(s)
  苅野祐一，太田克弘
- Organizer
  離散数学とその応用研究集会2015
- Place of Presentation
  熊本大学工学部（熊本県・熊本市）
- Year and Date
  2015-08-22
- Data Source
  KAKENHI-PROJECT-24340021
[Presentation] グラフのρ-coloringとHadwiger数2015
- Author(s)
  苅野祐一, 太田克弘
- Organizer
  応用数学合同研究集会
- Place of Presentation
  龍谷大学（滋賀県・大津市）
- Year and Date
  2015-12-17
- Data Source
  KAKENHI-PROJECT-24340021
[Presentation] グラフが同じ長さの点素な偶閉路を含むための次数条件2015
- Author(s)
  太田克弘, 江川嘉美, 藤田慎也, 佐久間雅
- Organizer
  日本数学会秋季総合分科会
- Place of Presentation
  京都産業大学（京都府・京都市）
- Year and Date
  2015-09-14
- Data Source
  KAKENHI-PROJECT-24340021
[Presentation] regular graph の total edge-connectivity について2014
- Author(s)
  井出光, 太田克弘
- Organizer
  応用数学合同研究集会
- Place of Presentation
  龍谷大学(滋賀県大津市)
- Year and Date
  2014-12-18
- Data Source
  KAKENHI-PROJECT-24340021
[Presentation] 3-choosable となる完全多部グラフについて2014
- Author(s)
  小林祐人, 太田克弘
- Organizer
  応用数学合同研究集会
- Place of Presentation
  龍谷大学(滋賀県大津市)
- Year and Date
  2014-12-18
- Data Source
  KAKENHI-PROJECT-24340021
[Presentation] Vertex-disjoint isomorphic theta subgraphs2014
- Author(s)
  Shinya Fujita, Katsuhiro Ota and Tadashi Sakuma
- Organizer
  2014 SIAM Conference on Discrete Mathematics, Minisymposium: Cycles and Paths
- Place of Presentation
  Hyatt Regency Minneapolis, Minneapolis, Minnesota, USA
- Year and Date
  2014-06-17
- Invited
- Data Source
  KAKENHI-PROJECT-24340021
[Presentation] Vertex-disjoint even cycles of the same length in large graphs2014
- Author(s)
  江川嘉美, 藤田慎也, 太田克弘, 佐久間雅
- Organizer
  応用数学合同研究集会
- Place of Presentation
  龍谷大学(滋賀県大津市)
- Year and Date
  2014-12-18
- Data Source
  KAKENHI-PROJECT-24340021
[Presentation] Clique minors chromatic numbers for degree sequences2013
- Author(s)
  太田克弘
- Organizer
  Hakata Workshop 2013 -Combinatorics and its applications-
- Place of Presentation
  九州大学(リファレンスビル博多駅東ビル)
- Year and Date
  2013-01-26
- Data Source
  KAKENHI-PROJECT-23654041
[Presentation] Clique minors, chromatic numbers for degree sequences in graphs2013
- Author(s)
  太田克弘
- Organizer
  日本数学会2013年度年会
- Place of Presentation
  京都大学
- Year and Date
  2013-03-20
- Data Source
  KAKENHI-PROJECT-23654041
[Presentation] Clique minors, chromatic numbers for degree sequences2013
- Author(s)
  太田克弘
- Organizer
  日本数学会2013年度年会
- Place of Presentation
  京都大学
- Year and Date
  2013-03-20
- Data Source
  KAKENHI-PROJECT-24340021
[Presentation] Topological minor, chromatic number, and degree sequence2012
- Author(s)
  Katsuhiro Ota
- Organizer
  4th Pacific Workshop on Discrete Mathematics
- Place of Presentation
  Hawaii Tokai International College, Honolulu, アメリカ
- Year and Date
  2012-11-27
- Data Source
  KAKENHI-PROJECT-24340021
[Presentation] 与えられたtree, forestを含むための最小次数条件2012
- Author(s)
  太田克弘
- Organizer
  関西グラフ理論研究集会
- Place of Presentation
  加計国際学術センター
- Year and Date
  2012-03-08
- Data Source
  KAKENHI-PROJECT-21340022
[Presentation] Forbidden induced subgraphs for toughness2012
- Author(s)
  Katsuhiro Ota
- Organizer
  International Conference on Cycles in Graphs
- Place of Presentation
  Vanderbilt University, Nashville, アメリカ
- Year and Date
  2012-06-02
- Data Source
  KAKENHI-PROJECT-24340021
[Presentation] Topolo- gical minor, chromatic number, and degree sequence2012
- Author(s)
  Ryo Hazama, Katsuhiro Ota
- Organizer
  4th Pacific Workshop on Discrete Mathematics
- Place of Presentation
  Tokai University Pacific Center (米国)
- Year and Date
  2012-11-27
- Data Source
  KAKENHI-PROJECT-21340022
[Presentation] Some problems in extremal graph theory2011
- Author(s)
  太田克弘
- Organizer
  研究集会「離散数理構造とその応用」
- Place of Presentation
  名古屋大学(invited)
- Year and Date
  2011-11-18
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] Minimum degree condition for forests2011
- Author(s)
  Katsuhiro Ota
- Organizer
  Workshop Cycles and Colourings 2011
- Place of Presentation
  Novy Smokovec, Slovakia(invited)
- Year and Date
  2011-09-08
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] Minimum degree condition for forests2011
- Author(s)
  K. Ota
- Organizer
  Workshop Cycles and Colourings 2011
- Place of Presentation
  Novy Smokovec, Slovakia
- Year and Date
  2011-09-08
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] Some problems in extremal graph theory2011
- Author(s)
  太田克弘
- Organizer
  研究集会「離散数理構造とその応用」
- Place of Presentation
  名古屋大学
- Year and Date
  2011-11-18
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] Forbidden subgraphs implying graph properties2010
- Author(s)
  G. Sueiro, 太田克弘, 小関健太, 藤沢潤
- Organizer
  日本数学会
- Place of Presentation
  慶應義塾大学
- Year and Date
  2010-03-24
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] Acyclic edge colorings of planar graphs2010
- Author(s)
  Shuto Kakimoto, Katsuhiro Ota, Yoshiaki Oda, Kenta Ozeki
- Organizer
  3rd Pacific Workshop on Discrete Mathe-matics
- Place of Presentation
  Tokai University Pacific Center(米国)
- Year and Date
  2010-12-07
- Data Source
  KAKENHI-PROJECT-21340022
[Presentation] Gabriel Sueiro, Forbidden induced subgraphs for toughness2010
- Author(s)
  Katsuhiro Ota
- Organizer
  3rd Pacific Workshop on Discrete Mathematics
- Place of Presentation
  Tokai University Pacific Center(米国)
- Year and Date
  2010-12-08
- Data Source
  KAKENHI-PROJECT-21340022
[Presentation] Forbidden subgraphs implying graph properties2010
- Author(s)
  G.Sueiro, 太田克弘, 小関健太, 藤沢潤
- Organizer
  日本数学会
- Place of Presentation
  慶応大学
- Year and Date
  2010-03-24
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] A Minimum Degree Condition for Forests2009
- Author(s)
  太田克弘
- Organizer
  離散数学とその応用研究集会2009
- Place of Presentation
  茨城大学(招待講演)
- Year and Date
  2009-08-07
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] A minimum degree Condition for forests2009
- Author(s)
  太田克弘
- Organizer
  離散数学とその応用研究集会2009
- Place of Presentation
  茨城大学(招待講演)
- Year and Date
  2009-08-07
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] Forbidden induced subgraphs for perfect matchings2009
- Author(s)
  G. Sueiro, 太田克弘
- Organizer
  日本数学会
- Place of Presentation
  大阪大学
- Year and Date
  2009-09-24
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] Forbidden induced subgraphs for perfect matching2009
- Author(s)
  G.Sueiro, 太田克弘
- Organizer
  日本数学会
- Place of Presentation
  大阪大学
- Year and Date
  2009-09-24
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] Forests in graphs2008
- Author(s)
  Katsuhiro Ota
- Organizer
  The 20th Workshop on Topological Graph Theory in Yokohama
- Place of Presentation
  横浜国立大学
- Year and Date
  2008-11-28
- Data Source
  KAKENHI-PROJECT-17340025
[Presentation] 極大K3と4連結claw-freeグラフのハミルトン性について2008
- Author(s)
  榎本彦衛, 藤沢潤, 太田克弘
- Organizer
  応用数学合同研究集会
- Place of Presentation
  龍谷大学
- Year and Date
  2008-12-15
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] 極大K_3と4連結claw-freeグラフのハミルトン性について2008
- Author(s)
  榎本彦衛, 藤沢潤, 太田克弘
- Organizer
  応用数学合同研究集会
- Place of Presentation
  龍谷大学
- Year and Date
  2008-12-15
- Data Source
  KAKENHI-PROJECT-20340023
[Presentation] Star coloring of cubic graphs2007
- Author(s)
  太田克弘
- Organizer
  離散数学とその応用研究集会2007
- Place of Presentation
  下呂市民会館
- Year and Date
  2007-08-08
- Data Source
  KAKENHI-PROJECT-17340025
[Presentation] Toughness and bipartite-minors in graphs2007
- Author(s)
  Katsuhiro Ota
- Organizer
  38th Southeastern International Conference on Combinatorics, Graph Theory, and Computing
- Place of Presentation
  アメリカ合衆国, フロリダ
- Year and Date
  2007-03-09
- Data Source
  KAKENHI-PROJECT-17340025
[Presentation] Recognizable colorings of paths and cycles2006
- Author(s)
  太田克弘
- Organizer
  第18回位相幾何学的グラフ理論研究集会
- Place of Presentation
  横浜国立大学
- Year and Date
  2006-11-17
- Data Source
  KAKENHI-PROJECT-17340025
[Presentation] Toughness of K_<a,t>-minors-free graphs2006
- Author(s)
  Katsuhiro Ota
- Organizer
  International Workshop on Discrete Mathematics and its Applications
- Place of Presentation
  茨城大学
- Year and Date
  2006-08-01
- Data Source
  KAKENHI-PROJECT-17340025
[Presentation] Disjoint chorded cycles of the same length
- Author(s)
  G. Chen, R.J. Gould, K. Hirohata, K. Ota and S. Shan
- Organizer
  Graph Theory Conference -- in honor of Yoshimi Egawa on the occasion of his 60th birthday
- Place of Presentation
  東京理科大学
- Data Source
  KAKENHI-PROJECT-24340021
[Presentation] Disjoint chorded cycles of the same length
- Author(s)
  G. Chen, R.J. Gould, K. Hirohata, K. Ota and S. Shan
- Organizer
  日本数学会2013年度秋季総合分科会
- Place of Presentation
  愛媛大学
- Data Source
  KAKENHI-PROJECT-24340021
[Presentation] Tree-Star Ramsey numbers
- Author(s)
  太田克弘，藤口貴憲
- Organizer
  田澤新成先生ご退職記念研究集会
- Place of Presentation
  近畿大学
- Data Source
  KAKENHI-PROJECT-24340021
[Presentation] Clique minors, chromatic numbers for degree sequences
- Author(s)
  太田克弘
- Organizer
  Hakata Workshop 2013 --Combinatorics and its applications--
- Place of Presentation
  九州大学（リファレンス博多駅東ビル）
- Invited
- Data Source
  KAKENHI-PROJECT-23654041
[Presentation] Vertex-disjoint isomorphic theta subgraphs
- Author(s)
  S. Fujita, K. Ota and T. Sakuma
- Organizer
  The 3rd Taiwan-Japan Conference on Combinatorics and its Applications
- Place of Presentation
  National Chiayi University, Taiwan
- Invited
- Data Source
  KAKENHI-PROJECT-24340021

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# of Collaborated Products: 0 results
88. Fleiner Tamas

# of Collaborated Projects: 1 results

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89. OZEKI Kenta

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
90. TSUCHIYA Shoichi

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
91. NOGUCHI Kenta

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
92. SAKUMA Tadashi

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results

Ota Katsuhiro 太田 克弘

OTA Katsuhiro 太田 克弘

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グラフの大域構造に着目した極値問題の研究Principal Investigator

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Development of Extremal Graph Theory for Sparse GraphsPrincipal Investigator

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Integrated research of extremal problems on graph factors, minors and subgraphsPrincipal Investigator

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Research on graphs densely embedded on a closed surfacePrincipal Investigator

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Research on graphs characterized by forbidden minorsPrincipal Investigator

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Ota Katsuhiro 太田克弘

OTA Katsuhiro 太田克弘