momihara koji 籾原幸二

… Alternative Names

MOMIHARA Koji 籾原幸二

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Researcher Number	70613305
Other IDs
Affiliation (Current)	2025: 熊本大学, 大学院先端科学研究部(理), 准教授
Affiliation (based on the past Project Information) *help	2018 – 2024: 熊本大学, 大学院先端科学研究部(理), 准教授 2015 – 2017: 熊本大学, 教育学部, 准教授 2011 – 2014: 熊本大学, 教育学部, 講師
Review Section/Research Field	Principal Investigator Basic Section 12030:Basic mathematics-related / Foundations of mathematics/Applied mathematics / General mathematics (including Probability theory/Statistical mathematics) Except Principal Investigator Basic Section 12030:Basic mathematics-related / Foundations of mathematics/Applied mathematics / Algebra
Keywords	Principal Investigator 強正則グラフ / 差集合 / 差集合族 / アソシエーションスキーム / ガウス和 / アダマール行列 / 有限幾何 / 歪アダマール差集合 / 有限体 / 組合せデザイン … More / ラマヌジャングラフ / D-最適行列 / D-最適計画 / 最大行列式値決定問題 / 均整アダマール行列 / D-最適性 / 歪みアダマール行列 / 自己双対符号 / divisible design graph / 2-交差集合 / 符号 / グラフ / デザイン / 対称アダマール差集合 / 歪対称アダマール差集合 / アダマール差集合族 / ペイリー差集合族 / アダマール差集合 / ガウス周期 / Griesmer符号 / 三重交差数 / m-ovoid / Weighing行列 / 円分強正則グラフ / 平方剰余差集合 / 平方剰余型差集合 / 相対ガウス和 / ガロア環 / アダマール型差集合 / 応用数学 / 組合せ論 … More Except Principal Investigator 符号 / 代数的組合せ論 / 有限幾何 / グラフ理論 / 代数的符号理論 / マトロイド理論 / 線形符号 / 最小距離の大きい符号 / 光直交符号 / Steiner quadruple system / 軌道の分解可能性 / 巡回準直交配列 / 巡回最適準直交計画 / 組合せ符号 / fMRI / almost orthogonal array / 巡回直交配列 / locating array / 球面デザイン / グループテスト / 組合せデザイン / アダマール行列 / 符号理論 / difference family / Hadamard行列 / ガウス和 / 差集合 / ガロア環 Less

A new development for the maximum determinant problem based on difference families and Ramanujan graphsPrincipal Investigator
- Principal Investigator
  
  籾原幸二
- Project Period (FY)
  2024 – 2027
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 12030:Basic mathematics-related
- Research Institution
  Kumamoto University
Constructive research towards solving the existence problem on Hadamard matricesPrincipal Investigator
- Principal Investigator
  
  Momihara Koji
- Project Period (FY)
  2020 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 12030:Basic mathematics-related
- Research Institution
  Kumamoto University
マトロイドの臨界問題の新展開と解決への複合的アプローチ
- Principal Investigator
  
  城本啓介
- Project Period (FY)
  2020 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 12030:Basic mathematics-related
- Research Institution
  Kumamoto University
New constructions of designs, graphs and codes over finite fields based on finite geometry and algebraic methodsPrincipal Investigator
- Principal Investigator
  
  Momihara Koji
- Project Period (FY)
  2017 – 2019
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Foundations of mathematics/Applied mathematics
- Research Institution
  Kumamoto University
Combinatorial designs and their optimalitiy related to Codes, spherical designs and grouptesting
- Principal Investigator
  
  Jimbo Masakazu
- Project Period (FY)
  2015 – 2019
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Foundations of mathematics/Applied mathematics
- Research Institution
  Chubu University
Existence of skew Hadamard difference sets and cyclotomic strongly regular graphs on finite fieldsPrincipal Investigator
- Principal Investigator
  
  MOMIHARA KOJI
- Project Period (FY)
  2013 – 2015
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Foundations of mathematics/Applied mathematics
- Research Institution
  Kumamoto University
A study of combinatorics over Galois rings
- Principal Investigator
  
  YAMADA Mieko
- Project Period (FY)
  2012 – 2014
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  Tokyo Woman's Christian University
  Kanazawa University
New constructions of Hadamard matrices based on difference familiesand their generalizationsPrincipal Investigator
- Principal Investigator
  
  MOMIHARA Koji
- Project Period (FY)
  2011 – 2012
- Research Category
  
  Grant-in-Aid for Research Activity Start-up
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Kumamoto University

All 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 Other

All Journal Article Presentation

[Journal Article] Strongly Regular Graphs from Pseudocyclic Association Schemes2024
- Author(s)
  Momihara Koji、Suda Sho
- Journal Title
  
  Graphs and Combinatorics
  
  Volume: 40 Issue: 2
- DOI
  10.1007/s00373-024-02764-x
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K03410, KAKENHI-PROJECT-20K03719
[Journal Article] Difference sets in pseudocyclic association schemes2023
- Author(s)
  Kajiura Hiroki、Momihara Koji
- Journal Title
  
  Discrete Mathematics
  
  Volume: 346 Issue: 12 Pages: 113598-113598
- DOI
  10.1016/j.disc.2023.113598
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03719, KAKENHI-PROJECT-23K20225
[Journal Article] The existence of Cameron-Liebler line classes with parameter $\frac{(q+1)^2}{3}$2023
- Author(s)
  籾原幸二
- Journal Title
  
  京都大学数理解析研究所講究録
  
  Volume: 2253
- Data Source
  KAKENHI-PROJECT-20K03719
[Journal Article] Hadamard matrices related to a certain series of ternary self-dual codes2023
- Author(s)
  M. Araya, M. Harada, K. Momihara
- Journal Title
  
  Designs, Codes and Cryptography
  
  Volume: 91 Issue: 3 Pages: 795-805
- DOI
  10.1007/s10623-022-01127-y
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03719, KAKENHI-PROJECT-21K03350, KAKENHI-PROJECT-19H01802, KAKENHI-PROJECT-23K20225
[Journal Article] Cyclic arcs of Singer type and strongly regular Cayley graphs over finite fields2022
- Author(s)
  Momihara Koji、Xiang Qing
- Journal Title
  
  Finite Fields and Their Applications
  
  Volume: 77 Pages: 101953-101953
- DOI
  10.1016/j.ffa.2021.101953
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03719, KAKENHI-PROJECT-23K20225
[Journal Article] Square (1,-1)-matrices with large determinants and near-Hadamard matrices2022
- Author(s)
  K. Momihara, S. Suda, Q. Xiang
- Journal Title
  
  Linear Algebra and its Applications
  
  Volume: 654 Pages: 28-55
- DOI
  10.1016/j.laa.2022.08.028
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03719, KAKENHI-PROJECT-22K03402, KAKENHI-PROJECT-18K03395, KAKENHI-PROJECT-23K20225
[Journal Article] A note on avoidance games on Steiner triple systems2022
- Author(s)
  N. Matsumoto, K. Momihara, M. Nakamura
- Journal Title
  
  Australasian Journal of Combinatorics
  
  Volume: 83 Pages: 196-293
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-20K03719
[Journal Article] A note on avoidance games on Steiner triple systems2022
- Author(s)
  Naoki Matsumoto, Mio Nakamura, Koji Momihara
- Journal Title
  
  Australasian Journal of Combinatorics
  
  Volume: 83 Pages: 196-203
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23K20225
[Journal Article] Pure Gauss sums and skew Hadamard difference sets2022
- Author(s)
  Momihara Koji
- Journal Title
  
  Finite Fields and Their Applications
  
  Volume: 77 Pages: 101932-101932
- DOI
  10.1016/j.ffa.2021.101932
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03719, KAKENHI-PROJECT-23K20225
[Journal Article] New constructions of strongly regular Cayley graphs on abelian non p-groups2021
- Author(s)
  Momihara Koji
- Journal Title
  
  Journal of Combinatorial Theory, Series A
  
  Volume: 184 Pages: 105514-105514
- DOI
  10.1016/j.jcta.2021.105514
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03719, KAKENHI-PROJECT-23K20225
[Journal Article] A new family of Hadamard matrices of order 4(2p^2+1)2021
- Author(s)
  K. H. Leung, K. Momihara, Q. Xiang,
- Journal Title
  
  Discrete Mathematics
  
  Volume: 344 Issue: 1 Pages: 112-163
- DOI
  10.1016/j.disc.2020.112163
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03719, KAKENHI-PROJECT-15H03636, KAKENHI-PROJECT-23K20225
[Journal Article] Powers of Gauss sums in quadratic fields2021
- Author(s)
  Momihara Koji
- Journal Title
  
  Journal of Number Theory
  
  Volume: － Pages: 331-352
- DOI
  10.1016/j.jnt.2021.08.015
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03719, KAKENHI-PROJECT-23K20225
[Journal Article] Cameron-Liebler line classes with parameter x=\frac{(q+1)^2}{3}2021
- Author(s)
  Feng Tao、Momihara Koji、Rodgers Morgan、Xiang Qing、Zou Hanlin
- Journal Title
  
  Advances in Mathematics
  
  Volume: 385 Pages: 107780-107780
- DOI
  10.1016/j.aim.2021.107780
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03719, KAKENHI-PROJECT-23K20225
[Journal Article] A recursive construction for skew Hadamard difference sets2020
- Author(s)
  K. Momihara
- Journal Title
  
  The Electronic Journal of Combinatorics
  
  Volume: 27 Issue: 3
- DOI
  10.37236/9058
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-20K03719, KAKENHI-PROJECT-15H03636
[Journal Article] New constructions of Hadamard matrices2020
- Author(s)
  K. H. Leung, K. Momihara
- Journal Title
  
  Journal of Combinatorial Theory, Series A
  
  Volume: 171 Pages: 105160-105160
- DOI
  10.1016/j.jcta.2019.105160
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14236, KAKENHI-PROJECT-15H03636, KAKENHI-PROJECT-23K20225
[Journal Article] Generalized constructions of Menon-Hadamard difference sets2020
- Author(s)
  K. Momihara, Q. Xiang
- Journal Title
  
  Finite Fields and Their Applications
  
  Volume: 61 Pages: 101601-101601
- DOI
  10.1016/j.ffa.2019.101601
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14236, KAKENHI-PROJECT-15H03636
[Journal Article] A large family of strongly regular Cayley graphs2020
- Author(s)
  籾原幸二
- Journal Title
  
  第36 回代数的組合せ論シンポジウム報告集
  
  Volume: 36 Pages: 64-76
- Data Source
  KAKENHI-PROJECT-17K14236
[Journal Article] Cyclotomy, difference sets, sequences with low correlation, strongly regular graphs, and related geometric substructures2019
- Author(s)
  Koji Momihara, Qi Wang, Qing Xiang
- Journal Title
  
  Combinatorics and Finite Fields. Difference Sets, Polynomials, Pseudorandomness and Applications
  
  Volume: 印刷中 Pages: 173-198
- DOI
  10.1515/9783110642094-009
- ISBN
  9783110642094
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14236, KAKENHI-PROJECT-15H03636
[Journal Article] Constructions of skew Hadamard difference families2019
- Author(s)
  Koji Momihara, Qing Xiang
- Journal Title
  
  European Journal of Combinatorics
  
  Volume: 76 Pages: 73-81
- DOI
  10.1016/j.ejc.2018.09.007
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14236, KAKENHI-PROJECT-15H03636
[Journal Article] Strongly regular Cayley graphs from partitions of subdifference sets of the Singer difference sets2018
- Author(s)
  Koji Momihara, Qing Xiang
- Journal Title
  
  Finite Fields and Their Applications
  
  Volume: 50 Pages: 222-250
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14236
[Journal Article] A new infinite family of hemisystems of the Hermitian surfaces2018
- Author(s)
  John Bamberg, Melissa Lee, Koji Momihara, Qing Xiang
- Journal Title
  
  Combinatorica
  
  Volume: 38 Pages: 44-66
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14236
[Journal Article] Construction of strongly regular Cayley graphs based on three-valued Gauss periods2018
- Author(s)
  Momihara Koji
- Journal Title
  
  uropean Journal of Combinatorics
  
  Volume: 70 Pages: 232-250
- DOI
  10.1016/j.ejc.2018.01.007
- NAID
  120006861181
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-15H03636
[Journal Article] A new approach to the excess problem of Hadamard matrices2018
- Author(s)
  Hirasaka Mitsugu、Momihara Koji、Suda Sho
- Journal Title
  
  Algebraic Combinatorics
  
  Volume: 1 Issue: 5 Pages: 697-722
- DOI
  10.5802/alco.33
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03636
[Journal Article] Construction of strongly regular Cayley graphs based on three-valued Gauss periods2018
- Author(s)
  Koji Momihara
- Journal Title
  
  European Journal of Combinatorics
  
  Volume: 70 Pages: 232-250
- NAID
  120006861181
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14236
[Journal Article] Strongly regular Cayley graphs from partitions of subdifference sets of the Singer difference sets2018
- Author(s)
  Momihara Koji、Xiang Qing
- Journal Title
  
  Finite Fields and Their Applications
  
  Volume: 50 Pages: 222-250
- DOI
  10.1016/j.ffa.2017.11.010
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-15H03636
[Journal Article] A new series of optimaltight conlict-avoiding codes of weight 32017
- Author(s)
  Miwako Mishima, Kouji Momihara
- Journal Title
  
  Discrete Mathematics
  
  Volume: 340 Issue: 4 Pages: 617-629
- DOI
  10.1016/j.disc.2016.12.003
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K00053, KAKENHI-PROJECT-16K05269, KAKENHI-PROJECT-15H03636
[Journal Article] A new infinite family of hemisystems of the Hermitian surface2017
- Author(s)
  Bamberg, J., Lee, M., Momihara, K. and Xiang, Q.
- Journal Title
  
  Combinatorica
  
  Volume: 印刷中 Issue: 1 Pages: 43-66
- DOI
  10.1007/s00493-016-3525-4
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03636
[Journal Article] Distance sets on circles2017
- Author(s)
  Momihara, K. and Shinohara, M.
- Journal Title
  
  American Mathematical Monthly
  
  Volume: 124 Issue: 3 Pages: 241-254
- DOI
  10.4169/amer.math.monthly.124.3.241
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-15H03636, KAKENHI-PROJECT-26400003
[Journal Article] Three-valued Gauss periods, circulant weighing matrices and association schemes2016
- Author(s)
  T. Feng, K. Momihara, Q. Xiang
- Journal Title
  
  Journal of Algebraic Combinatorics
  
  Volume: 印刷中 Issue: 4 Pages: 851-875
- DOI
  10.1007/s10801-016-0664-z
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25800093, KAKENHI-PROJECT-15H03636
[Journal Article] Constructions of strongly regular Cayley graphs and skew Hadamard difference sets from cyclotomic classes2015
- Author(s)
  T. Feng, K. Momihara, Q. Xiang
- Journal Title
  
  Combinatorica
  
  Volume: 印刷中 Issue: 4 Pages: 413-434
- DOI
  10.1007/s00493-014-2895-8
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-24540013, KAKENHI-PROJECT-25800093, KAKENHI-PROJECT-15H03636
[Journal Article] ガウス周期とそれに関連するデザインおよびアソシエーションスキーム2015
- Author(s)
  籾原幸二
- Journal Title
  
  数理解析研究所講究録
  
  Volume: 1965 Pages: 135-149
- Data Source
  KAKENHI-PROJECT-15H03636
[Journal Article] A family of m-ovoids of parabolic quadrics2015
- Author(s)
  T. Feng, K. Momihara, Q. Xiang
- Journal Title
  
  Journal of Combinatorial Theory, Series A
  
  Volume: １４０ Pages: 97-111
- DOI
  10.1016/j.jcta.2016.01.002
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25800093, KAKENHI-PROJECT-15H03636
[Journal Article] New strongly regular decompositions of the complete graphs with prime power vertices2015
- Author(s)
  Momihara, K. and Okumura, K.
- Journal Title
  
  Finite Fields and Their Applications
  
  Volume: 36 Pages: 63-80
- DOI
  10.1016/j.ffa.2015.07.001
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03636, KAKENHI-PROJECT-25800093
[Journal Article] Cameron-Liebler line classes with parameter $x=\frac{q^2-1}{2}$2015
- Author(s)
  T. Feng, K. Momihara, Q. Xiang
- Journal Title
  
  Journal of Combinatorial Theory, Series A
  
  Volume: 133 Pages: 307-338
- DOI
  10.1016/j.jcta.2015.02.004
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-24540013, KAKENHI-PROJECT-25800093, KAKENHI-PROJECT-15H03636
[Journal Article] Nonsymmetric primitive translation schemes of prime power order2015
- Author(s)
  T. Feng, K. Momihara
- Journal Title
  
  Journal of Algebraic Combinatorics
  
  Volume: 41 Issue: 1 Pages: 1-20
- DOI
  10.1007/s10801-014-0523-8
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-24540013, KAKENHI-PROJECT-25800093
[Journal Article] Unified combinatorial constructions of optimal optical orthogonal codes2014
- Author(s)
  C. Fan, K. Momihara
- Journal Title
  
  Advances in Mathematics of Communications
  
  Volume: 8 Issue: 1 Pages: 53-66
- DOI
  10.3934/amc.2014.8.53
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24540013, KAKENHI-PROJECT-25800093
[Journal Article] Lifting constructions of strongly regular Cayley graphs2014
- Author(s)
  K. Momihara, Q. Xiang
- Journal Title
  
  Finite Fields and Their Applications
  
  Volume: 26 Pages: 86-99
- DOI
  10.1016/j.ffa.2013.11.003
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24540013, KAKENHI-PROJECT-25800093
[Journal Article] Certain strongly regular Cayley graphs on F_{2^{2(2s+1)}} from cyclotomy2014
- Author(s)
  K. Momihara
- Journal Title
  
  Finite Fields and Their Applications
  
  Volume: 25 Pages: 280-292
- DOI
  10.1016/j.ffa.2013.10.006
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24540013, KAKENHI-PROJECT-25800093
[Journal Article] Divisible difference family from Galois rings GR(4,n) and Hadamard matrices2014
- Author(s)
  K. Momihara, M. Yamada
- Journal Title
  
  Designs, Codes and Cryptography
  
  Volume: 73 Issue: 3 Pages: 897-909
- DOI
  10.1007/s10623-013-9833-4
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-24540013
[Journal Article] Lifting constructions of strongly regular graphs and association schemes in F_q2014
- Author(s)
  籾原幸二
- Journal Title
  
  数理解析研究所講究録
  
  Volume: 1872 Pages: 49-58
- Data Source
  KAKENHI-PROJECT-25800093
[Journal Article] Skew Hadamard difference sets from cyclotomic strongly regular graphs2013
- Author(s)
  K. Momihara
- Journal Title
  
  SIAM Journal on Discrete Mathematics
  
  Volume: 27 Issue: 2 Pages: 1112-1122
- DOI
  10.1137/120888788
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24540013, KAKENHI-PROJECT-25800093
[Journal Article] Inequivalence of skew Hadamard difference sets and triple intersection numbers modulo a prime2013
- Author(s)
  K. Momihara
- Journal Title
  
  Electronic Journal of Combinatorics
  
  Volume: 20-P35 Pages: 1-19
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24540013
[Journal Article] Strongly regular Cayleygraphs, skew Hadamard difference sets, andrationality of relative Gauss sums2013
- Author(s)
  Koji Momihara
- Journal Title
  
  European Journal of Combinatorics
  
  Volume: 34巻 Pages: 18-18
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23840032
[Journal Article] Inequivalence of skew Hadamard difference sets and triple intersection numbers modulo a prime2013
- Author(s)
  Koji Momihara
- Journal Title
  
  Electronic Journal of Combinatorics
  
  Volume: 20
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25800093
[Journal Article] 強正則グラフCay(F_q,D)と相対ガウス和の有理性について2013
- Author(s)
  籾原幸二
- Journal Title
  
  数理解析研究所講究録
  
  Volume: 1844 Pages: 153-163
- Data Source
  KAKENHI-PROJECT-25800093
[Journal Article] Evaluation of the weight distribution of a class of cyclic codes based on index 2 Gauss sums2013
- Author(s)
  T. Feng, K. Momihara
- Journal Title
  
  IEEE Transactions on Information Theory
  
  Volume: 59 Issue: 9 Pages: 5980-5984
- DOI
  10.1109/tit.2013.2259538
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24540013, KAKENHI-PROJECT-25800093
[Journal Article] Strongly regular Cayley graphs, skew Hadamard difference sets, and rationality of relative Gauss sums2013
- Author(s)
  K. Momihara
- Journal Title
  
  European Journal of Combinatorics
  
  Volume: 34 Issue: 4 Pages: 706-723
- DOI
  10.1016/j.ejc.2012.10.006
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23840032, KAKENHI-PROJECT-24540013
[Journal Article] Three-class association schemes from cyclotomy2013
- Author(s)
  K. Momihara
- Journal Title
  
  Journal of Combinatorial Theory, Series A
  
  Volume: 120 Issue: 6 Pages: 1202-1215
- DOI
  10.1016/j.jcta.2013.03.002
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23840032, KAKENHI-PROJECT-24540013, KAKENHI-PROJECT-25800093
[Journal Article] Three-classassociation schemes from cyclotomy、Journal of Combinatorial Theory2013
- Author(s)
  Tao Feng、Koji Momihara
- Journal Title
  
  Series A
  
  Volume: 120巻 Pages: 14-14
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23840032
[Journal Article] A decomposition of the 2-designformed by the planes in AG(2n,3)2012
- Author(s)
  Koji Momihara、Miwako Mishima、MasakazuJimbo
- Journal Title
  
  Finite Fields and Their Applications
  
  Volume: 18巻 Pages: 956-970
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23840032
[Journal Article] A decomposition of the 2-design formed by the planes in AG(2n,3)2012
- Author(s)
  Koji Momihara, Miwako Mishima, Masakazu Jimbo
- Journal Title
  
  Finite Fields and Their Applications
  
  Volume: Vol.18 Issue: 5 Pages: 956-970
- DOI
  10.1016/j.ffa.2012.04.001
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22540121, KAKENHI-PROJECT-23840032, KAKENHI-PROJECT-24540013, KAKENHI-PROJECT-24540111
[Journal Article] Amorphous association scheme に関するIvanov 予想の反例の一般化2011
- Author(s)
  籾原幸二、 Tao Feng 、 Qing Xiang
- Journal Title
  
  応用数学合同研究集会報告集
  
  Pages: 66-67
- Data Source
  KAKENHI-PROJECT-23840032
[Journal Article] Amorphous association schemeに関するIvanov予想の反例の一般化2011
- Author(s)
  籾原幸二, Tao Feng, Qing Xiang
- Journal Title
  
  応用数学合同研究集会報告集
  
  Pages: 66-67
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Strongly regular graphs from pseudocyclic association schemes2024
- Author(s)
  籾原幸二
- Organizer
  スペクトラルグラフ理論および周辺領域第1 2 回研究集会
- Data Source
  KAKENHI-PROJECT-20K03719
[Presentation] Strongly regular graphs from pseudocyclic association schemes2023
- Author(s)
  籾原　幸二
- Organizer
  スペクトラルグラフ理論および周辺領域第12 回研究集会
- Data Source
  KAKENHI-PROJECT-23K20225
[Presentation] Strongly regular graphs and association schemes from pseudocyclic association schemes2023
- Author(s)
  Koji Momihara
- Organizer
  2023 International Conference on Combinatorics and Finite Geometry
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03719
[Presentation] Strongly regular graphs and association schemes from pseudocyclic association schemes2023
- Author(s)
  Koji Momihara
- Organizer
  2023 International Conference on Combinatorics and Finite Geometry
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K20225
[Presentation] Partial difference sets of Latin square type or negative Latin square type in abelian non p-groups2022
- Author(s)
  Koji Momihara
- Organizer
  The 6-th International Workshop on Algebraic Designs, Hadamard Matrices & Quanta
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K20225
[Presentation] The existence of Cameron-Liebler line classes with parameter x =(q+1)^2/32022
- Author(s)
  籾原幸二
- Organizer
  RIMS共同研究(研究集会)『有限群論，代数的組合せ論，頂点代数の研究』
- Data Source
  KAKENHI-PROJECT-23K20225
[Presentation] The existence of Cameron-Liebler line classes with parameter x =(q+1)^2/32022
- Author(s)
  籾原幸二
- Organizer
  京都大学RIMS共同研究(研究集会)「有限群論，代数的組合せ論，頂点代数の研究」
- Data Source
  KAKENHI-PROJECT-20K03719
[Presentation] Partial difference sets of Latin square type or negative Latin square type in abelian non p-groups2022
- Author(s)
  Koji Momihara
- Organizer
  The 6-th International Workshop on Algebraic Designs, Hadamard Matrices & Quanta
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03719
[Presentation] 有理数体または二次体の元となる有限体上のガウス和の冪と関連する組合せ論2022
- Author(s)
  籾原幸二
- Organizer
  愛媛大学『第89回代数セミナー』
- Data Source
  KAKENHI-PROJECT-23K20225
[Presentation] 可換非p-群上のpartial difference setについて2021
- Author(s)
  籾原幸二
- Organizer
  第22回名古屋組合せ論セミナー(第9回実験計画法とその周辺・オンラインセミナー)
- Invited
- Data Source
  KAKENHI-PROJECT-20K03719
[Presentation] A recursion on skew Hadamard difference sets2019
- Author(s)
  籾原幸二
- Organizer
  研究集会「実験計画法と符号および関連する組合せ構造2019」
- Data Source
  KAKENHI-PROJECT-17K14236
[Presentation] A big family of strongly regular graphs from three-valued Gauss periods2019
- Author(s)
  籾原幸二
- Organizer
  第36回代数的組合せ論シンポジウム
- Data Source
  KAKENHI-PROJECT-17K14236
[Presentation] A recursion on skew Hadamard difference sets,2019
- Author(s)
  籾原幸二
- Organizer
  研究集会「実験計画法と符号および関連する組合せ構造2019」, 山口
- Data Source
  KAKENHI-PROJECT-15H03636
[Presentation] A large family of strongly regular Cayley graphs from three-valued Gauss periods2019
- Author(s)
  Koji Momihara
- Organizer
  Finite Geometry and Extremal Combinatorics
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14236
[Presentation] A large family of strongly regular Cayley graphs from three-valued Gauss periods,2019
- Author(s)
  Momihara, K.
- Organizer
  Finite Geometry and Extremal Combinatorics, University of Delaware
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03636
[Presentation] A big family of strongly regular graphs from three-valued Gauss periods.2019
- Author(s)
  籾原幸二
- Organizer
  「第36回代数的組合せ論シンポジウム」, 長崎大学
- Data Source
  KAKENHI-PROJECT-15H03636
[Presentation] Transformation of Hadamard matrices into regular or almost regular Hadamard matrices2018
- Author(s)
  Koji Momihara
- Organizer
  Workshop on difference sets at Zhejiang University
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14236
[Presentation] Skew Hadamard 行列の存在性に関するG. Szekeres の主張の修正について2018
- Author(s)
  籾原幸二
- Organizer
  研究集会「実験計画法ならびに情報数理と関連する組合せ構造2018」
- Data Source
  KAKENHI-PROJECT-15H03636
[Presentation] On Hadamard matrices with maximum excess2018
- Author(s)
  Koji Momihara
- Organizer
  Hadamard Matrices and Their Apllications
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14236
[Presentation] Skew Hadamard 行列の存在性に関するG. Szekeres の主張の修正について2018
- Author(s)
  籾原幸二
- Organizer
  研究集会「実験計画法ならびに情報数理と関連する組合せ構造2018」
- Data Source
  KAKENHI-PROJECT-17K14236
[Presentation] Transformation of Hadamard matrices into regular or almost regular Hadamard matrices2018
- Author(s)
  K. Momihara
- Organizer
  Workshop on difference sets at Zhejiang University
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03636
[Presentation] Switching for Hadamard Matrices -A new approach to the excess problem-2018
- Author(s)
  Koji Momihara
- Organizer
  The 5th Taiwan-Japan Conference on Combinatorics and its Applications
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14236
[Presentation] Skew Hadamard 行列の存在性に関するG. Szekeres の主張の修正について2018
- Author(s)
  籾原幸二
- Organizer
  研究集会「離散数学とその応用研究集会2018」
- Data Source
  KAKENHI-PROJECT-17K14236
[Presentation] On regular or biregular Hadamard matrices2017
- Author(s)
  Koji Momihara
- Organizer
  研究集会「実験計画法と符号および関連する組合せ構造」
- Data Source
  KAKENHI-PROJECT-17K14236
[Presentation] Construction of strongly regular Cayley graphs based on three-valued Gauss periods2017
- Author(s)
  Koji Momihara
- Organizer
  RIMS研究集会「代数的組合せ論および有限群・頂点作用素代数とその表現の研究」
- Data Source
  KAKENHI-PROJECT-17K14236
[Presentation] Three-valued Gauss periods and related strongly regular Cayley graphs2017
- Author(s)
  Koji Momihara
- Organizer
  Hakata Workshop; Summer Meeting 2017
- Data Source
  KAKENHI-PROJECT-17K14236
[Presentation] Strongly regular Cayley graphs from three-valued Gauss periods2017
- Author(s)
  Koji Momihara
- Organizer
  Japanese Conference on Combinatorics and its Applications
- Data Source
  KAKENHI-PROJECT-17K14236
[Presentation] New m-ovoids of finite polar spaces2016
- Author(s)
  籾原幸二
- Organizer
  第 33 回代数的組合せ論シンポジウム
- Place of Presentation
  滋賀大学（滋賀県，大津市）
- Data Source
  KAKENHI-PROJECT-15H03636
[Presentation] New hemisystems of the Hermitian surface and related association schemes2016
- Author(s)
  Momihara, K.
- Organizer
  The 4th Japan-Taiwan Conference on Combinatorics and its Applications
- Place of Presentation
  北九州国際会議場，福岡県北九州
- Year and Date
  2016-03-05
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03636
[Presentation] Conference matrices with maximum excess and two-intersection sets2016
- Author(s)
  籾原幸二, 須田庄
- Organizer
  2016 年度応用数学合同研究集会
- Place of Presentation
  滋賀大学（滋賀県，大津市）
- Data Source
  KAKENHI-PROJECT-15H03636
[Presentation] New hemisystems and related 4-class association schemes2016
- Author(s)
  Momihara, K.
- Organizer
  Korea-Japan Workshop on Algebra and Combinatorics
- Place of Presentation
  Pusan National University, Pusan, Korea
- Year and Date
  2016-01-10
- Data Source
  KAKENHI-PROJECT-15H03636
[Presentation] Distance sets on circles and Kneser's theorem2016
- Author(s)
  Momihara, K.
- Organizer
  New Directions in Combinatorics
- Place of Presentation
  National University of Singapore, Singapore
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03636
[Presentation] New hemisystems and related 4-class association schemes2016
- Author(s)
  Koji Momihara
- Organizer
  Korea-Japan Workshop on Algebra and Combinatorics
- Place of Presentation
  Pusan National University
- Year and Date
  2016-01-28
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25800093
[Presentation] New hemisystems of the Hermitian surface and related association schemes2016
- Author(s)
  Koji Momihara
- Organizer
  The 4th Japan-Taiwan Conference on Combinatorics and its Applications
- Place of Presentation
  北九州国際会議場
- Year and Date
  2016-03-05
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25800093
[Presentation] Distance sets on circles. Systems of Lines2015
- Author(s)
  Momihara, K.
- Organizer
  Applications of Algebraic Combinatorics
- Place of Presentation
  Worcester Polytechnic Institute, Worcester, USA
- Year and Date
  2015-08-01
- Data Source
  KAKENHI-PROJECT-15H03636
[Presentation] Skew Hadamard difference sets: Constructions and Inequivalence2015
- Author(s)
  Koji Momihara
- Organizer
  International Workshop on Algebraic Combinatorics at Zhejiang University
- Place of Presentation
  Zhejiang University
- Year and Date
  2015-09-18
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25800093
[Presentation] Resolvability of a cyclic orbit of a subset of Zv and a spread decomposition of a Singer cycle of projective lines2015
- Author(s)
  Masakazu Jimbo*, Miwako Mishima, Koji Momihara
- Organizer
  The 18th Confernce on Algebraic Combinatorics and Applications
- Place of Presentation
  Michigan Technological University, Houghton, USA
- Year and Date
  2015-08-26
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03636
[Presentation] Skew Hadamard difference sets: Constructions and Inequivalence2015
- Author(s)
  Momihara, K.
- Organizer
  International Workshop on Algebraic Combinatorics at Zhejiang University
- Place of Presentation
  Zhejiang University, Hanzhu, China
- Year and Date
  2015-09-01
- Data Source
  KAKENHI-PROJECT-15H03636
[Presentation] New hemisystems of the Hermitian surface2015
- Author(s)
  籾原幸二
- Organizer
  研究集会「実験計画法と符号および関連する組合せ構造2015」
- Place of Presentation
  箱根水明荘
- Year and Date
  2015-12-01
- Data Source
  KAKENHI-PROJECT-25800093
[Presentation] New hemisystems of the Hermitian surface2015
- Author(s)
  籾原幸二
- Organizer
  研究集会「実験計画法と符号および関連する組合せ構造 2015」
- Place of Presentation
  箱根水明荘，神奈川県箱根湯本
- Year and Date
  2015-12-01
- Data Source
  KAKENHI-PROJECT-15H03636
[Presentation] Distance sets on circles2015
- Author(s)
  Koji Momihara
- Organizer
  Systems of Lines: Applications of Algebraic Combinatorics
- Place of Presentation
  Worcester Polytechnic Institute
- Year and Date
  2015-06-10
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25800093
[Presentation] Inequivalence of skew Hadamard difference sets2014
- Author(s)
  Koji Momihara
- Organizer
  The 3rd Taiwan-Japan Conference on Combinatorics and its Applications
- Place of Presentation
  Taiwan, National Chiayi University
- Invited
- Data Source
  KAKENHI-PROJECT-25800093
[Presentation] Skew Hadamard difference setの非同値性の問題について2013
- Author(s)
  籾原幸二
- Organizer
  第10回「代数学と計算」研究集会
- Place of Presentation
  東京(首都大学東京)
- Data Source
  KAKENHI-PROJECT-25800093
[Presentation] skew Hadamard difference set とその非同値性について2013
- Author(s)
  籾原幸二
- Organizer
  離散数学とその応用研究集会
- Place of Presentation
  山形(山形市保健センター)
- Data Source
  KAKENHI-PROJECT-25800093
[Presentation] 強正則グラフ Cay(F_q,D)と相対ガウス和の有理性について2012
- Author(s)
  籾原幸二
- Organizer
  RIMS 研究集会「デザイン、符号、グラフおよびその周辺」
- Place of Presentation
  京都大学(京都)
- Year and Date
  2012-07-19
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Recent progress on cyclotomicstrongly regular graphs and skew Hadamard difference sets2012
- Author(s)
  籾原幸二
- Organizer
  研究集会「有限体とそれに関連する代数的組合せ論」
- Place of Presentation
  神戸学院大学(兵庫)
- Year and Date
  2012-03-03
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Lifting constructions ofstrongly regular graphs and associationschemes in F_q2012
- Author(s)
  籾原幸二
- Organizer
  RIMS 研究集会「有限群とその表現,頂点作用素代数,代数的組合せ論の研究」
- Place of Presentation
  京都大学(京都)
- Year and Date
  2012-01-08
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Lifting constructions ofstrongly regular Cayley graphs2012
- Author(s)
  籾原幸二
- Organizer
  研究集会「代数的グラフ理論、スペクトラルグラフ理論および周辺領域」
- Place of Presentation
  名古屋大学(愛知)
- Year and Date
  2012-01-06
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Recent progress on cyclotomic strongly regular graphs and skew Hadamard difference sets2012
- Author(s)
  籾原幸二
- Organizer
  研究集会「有限体とそれに関連する代数的組合せ論」
- Place of Presentation
  神戸学院大学(兵庫県)
- Year and Date
  2012-03-03
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Strongly regular Cayleygraphs and rationality of relative Gausssums2012
- Author(s)
  Koji Momihara
- Organizer
  Combinatorics 2012
- Place of Presentation
  Hotel Gio(イタリア・ペルージャ)
- Year and Date
  2012-09-14
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Lifting construction ofstrongly regular Cayley graphs in F_q2012
- Author(s)
  籾原幸二
- Organizer
  The 2nd Japan-Taiwan Conference onCombinatorics and its Applications
- Place of Presentation
  名古屋大学(愛知)
- Year and Date
  2012-11-12
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation]2011
- Author(s)
  籾原幸二、Tao Feng、Qing Xiang
- Organizer
  2011年度応用数学合同研究集会
- Place of Presentation
  龍谷大学(滋賀)
- Year and Date
  2011-12-16
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Supplementary divisible difference sets over Galois rings of characteristic 4 from generalized Szekeres's construction2011
- Author(s)
  籾原幸二
- Organizer
  日本数学会秋季総合分科会応用数学分科会
- Place of Presentation
  信州大学(長野県)
- Year and Date
  2011-09-29
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Amorphous association schemeに関するIvanov予想の反例の一般化2011
- Author(s)
  籾原幸二, Tao Feng, Qing Xiang
- Organizer
  2011年度応用数学合同研究集会
- Place of Presentation
  龍谷大学(滋賀県)
- Year and Date
  2011-12-16
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Supplementary divisibledifference sets over Galois rings ofcharacteristic 4 from generalizedSzekeres's construction2011
- Author(s)
  籾原幸二
- Organizer
  日本数学会秋季総合分科会応用数学分科会
- Place of Presentation
  信州大学(長野)
- Year and Date
  2011-09-29
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Three-valued Gauss periods and related designs and association schemes
- Author(s)
  籾原幸二
- Organizer
  RIMS研究集会「有限群とその表現, 頂点作用素代数, 代数的組合せ論の研究」
- Place of Presentation
  京都府(京都大学)
- Year and Date
  2014-12-16 – 2014-12-19
- Data Source
  KAKENHI-PROJECT-25800093
[Presentation] skew Hadamard difference set とその非同値性について
- Author(s)
  籾原幸二
- Organizer
  離散数学とその応用研究集会
- Place of Presentation
  山形(山形市保健センター)
- Data Source
  KAKENHI-PROJECT-24540013
[Presentation] Strongly regular Cayley graphs and rationality of relative Gauss sums
- Author(s)
  籾原幸二
- Organizer
  Combinatorics 2012
- Place of Presentation
  イタリア(ペルージャ)
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Cyclotomic schemes and related problems
- Author(s)
  籾原幸二
- Organizer
  代数的組合せ論「夏の学校2014」
- Place of Presentation
  宮城県(ホテルクレセント)
- Year and Date
  2014-06-15 – 2014-06-18
- Invited
- Data Source
  KAKENHI-PROJECT-25800093
[Presentation] Skew Hadamard difference setの非同値性の問題について
- Author(s)
  籾原幸二
- Organizer
  第10回「代数学と計算」研究集会
- Place of Presentation
  東京(首都大学東京)
- Data Source
  KAKENHI-PROJECT-24540013
[Presentation] Lifting construction of strongly regular Cayley graphs in F_q
- Author(s)
  籾原幸二
- Organizer
  The 2nd Japan-Taiwan Conference on Combinatorics and its Applications
- Place of Presentation
  愛知(名古屋大学)
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Lifting constructions of strongly regular graphs and association schemes in F_q
- Author(s)
  K. Momihara
- Organizer
  RIMS 研究集会「有限群とその表現，頂点作用素代数，代数的組合せ論の研究」
- Place of Presentation
  京都(京都大学)
- Data Source
  KAKENHI-PROJECT-24540013
[Presentation] Inequivalence of skew Hadamard difference sets
- Author(s)
  K. Momihara
- Organizer
  The 3rd Taiwan-Japan Conference on Combinatorics and its Applications
- Place of Presentation
  Taiwan(National Chiayi University)
- Invited
- Data Source
  KAKENHI-PROJECT-24540013
[Presentation] 強正則グラフCay(F_q,D)と相対ガウス和の有理性について
- Author(s)
  籾原幸二
- Organizer
  RIMS 研究集会「デザイン、符号、グラフおよびその周辺」
- Place of Presentation
  京都(京都大学)
- Invited
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] 古典的な指標和とそれに関連する組合せ論
- Author(s)
  籾原幸二
- Organizer
  第11回組合せ論若手研究集会
- Place of Presentation
  神奈川県(慶應義塾大学)
- Year and Date
  2015-03-04 – 2015-03-05
- Invited
- Data Source
  KAKENHI-PROJECT-25800093
[Presentation] Three-valued Gauss periods and related designs and association schemes
- Author(s)
  籾原幸二
- Organizer
  RIMS研究集会「有限群とその表現, 頂点作用素代数, 代数的組合せ論の研究」
- Place of Presentation
  京都大学（京都府・京都市）
- Year and Date
  2014-12-16 – 2014-12-19
- Data Source
  KAKENHI-PROJECT-24540013
[Presentation] Lifting constructions of strongly regular Cayley graphs
- Author(s)
  籾原幸二
- Organizer
  研究集会「代数的グラフ理論、スペクトラルグラフ理論および周辺領域」
- Place of Presentation
  愛知(名古屋大学)
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Cyclotomic schemes and related problems
- Author(s)
  籾原幸二
- Organizer
  代数的組合せ論「夏の学校2014」
- Place of Presentation
  ホテルクレセント（宮城県・仙台市）
- Year and Date
  2014-06-15 – 2014-06-18
- Invited
- Data Source
  KAKENHI-PROJECT-24540013
[Presentation] Lifting constructions of strongly regular graphs and association schemes in F_q
- Author(s)
  籾原幸二
- Organizer
  RIMS 研究集会「有限群とその表現，頂点作用素代数，代数的組合せ論の研究」
- Place of Presentation
  京都(京都大学)
- Invited
- Data Source
  KAKENHI-PROJECT-23840032
[Presentation] Lifting constructions of strongly regular Cayley graphs
- Author(s)
  K. Momihara
- Organizer
  研究集会「代数的グラフ理論、スペクトラルグラフ理論および周辺領域」
- Place of Presentation
  愛知(名古屋大学)
- Data Source
  KAKENHI-PROJECT-24540013
[Presentation] 強正則グラフCay(F_q,D)と相対ガウス和の有理性について
- Author(s)
  籾原幸二
- Organizer
  RIMS 研究集会「デザイン、符号、グラフおよびその周辺」
- Place of Presentation
  京都(京都大学)
- Data Source
  KAKENHI-PROJECT-24540013
[Presentation] 古典的な指標和とそれに関連する組合せ論
- Author(s)
  籾原幸二
- Organizer
  第11回組合せ論若手研究集会
- Place of Presentation
  慶應義塾大学（神奈川県・横浜市）
- Year and Date
  2015-03-04 – 2015-03-05
- Invited
- Data Source
  KAKENHI-PROJECT-24540013
[Presentation] Lifting construction of strongly regular Cayley graphs in F_q
- Author(s)
  K. Momihara
- Organizer
  The 2nd Japan-Taiwan Conference on Combinatorics and its Applications
- Place of Presentation
  愛知(名古屋大学)
- Data Source
  KAKENHI-PROJECT-24540013
[Presentation] New projective two-intersection sets and related Hadamard difference sets
- Author(s)
  籾原幸二
- Organizer
  研究集会「実験計画法およびその周辺の組合せ構造2014」
- Place of Presentation
  兵庫県(城崎国際アートセンター)
- Year and Date
  2014-12-13 – 2014-12-15
- Data Source
  KAKENHI-PROJECT-25800093
[Presentation] Strongly regular Cayley graphs and rationality of relative Gauss sums
- Author(s)
  K. Momihara
- Organizer
  Combinatorics 2012
- Place of Presentation
  イタリア(ペルージャ)
- Data Source
  KAKENHI-PROJECT-24540013
[Presentation] New projective two-intersection sets and related Hadamard difference sets
- Author(s)
  籾原幸二
- Organizer
  研究集会「実験計画法およびその周辺の組合せ構造2014」
- Place of Presentation
  城崎国際アートセンター（兵庫県・豊岡市）
- Year and Date
  2014-12-13 – 2014-12-15
- Data Source
  KAKENHI-PROJECT-24540013

1. YAMADA Mieko (70130226)

# of Collaborated Projects: 2 results

# of Collaborated Products: 1 results
2. 城本啓介 (00343666)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
3. 丸田辰哉 (80239152)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
4. Jimbo Masakazu (50103049)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
5. 三嶋美和子 (00283284)

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
6. 繆いん (10302382)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. 盧暁南 (10805683)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. 佐藤潤也 (20235352)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. 澤正憲 (50508182)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. 金森敬文 (60334546)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
11. 栗木進二 (00167389)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
12. 平尾将剛 (90624073)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
13. 平石秀史 (70795335)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
14. 千葉周也 (80579764)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
15. 須田庄

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

momihara koji 籾原 幸二

MOMIHARA Koji 籾原 幸二

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A new development for the maximum determinant problem based on difference families and Ramanujan graphsPrincipal Investigator

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Constructive research towards solving the existence problem on Hadamard matricesPrincipal Investigator

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マトロイドの臨界問題の新展開と解決への複合的アプローチ

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New constructions of designs, graphs and codes over finite fields based on finite geometry and algebraic methodsPrincipal Investigator

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Combinatorial designs and their optimalitiy related to Codes, spherical designs and grouptesting

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Existence of skew Hadamard difference sets and cyclotomic strongly regular graphs on finite fieldsPrincipal Investigator

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A study of combinatorics over Galois rings

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New constructions of Hadamard matrices based on difference familiesand their generalizationsPrincipal Investigator

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[Journal Article] Strongly Regular Graphs from Pseudocyclic Association Schemes2024

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[Journal Article] Difference sets in pseudocyclic association schemes2023

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[Journal Article] The existence of Cameron-Liebler line classes with parameter $\frac{(q+1)^2}{3}$2023

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[Journal Article] Hadamard matrices related to a certain series of ternary self-dual codes2023

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[Journal Article] Cyclic arcs of Singer type and strongly regular Cayley graphs over finite fields2022

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[Journal Article] Square (1,-1)-matrices with large determinants and near-Hadamard matrices2022

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momihara koji 籾原幸二

MOMIHARA Koji 籾原幸二