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Representation of finite groups, character sums, and their applications

Research Project

Project/Area Number 21540024
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Algebra
Research InstitutionSophia University

Principal Investigator

SHINODA Ken-ichi  上智大学, 理工学部, 教授 (20053712)

Co-Investigator(Kenkyū-buntansha) NAKASHIMA Toshiki  上智大学, 理工学部, 教授 (60243193)
GOMI Yasushi  上智大学, 理工学部, 准教授 (50276515)
Project Period (FY) 2009 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords有限群の表現論 / ガウス和 / 指標和 / 有限群の表現 / 代数 / 有限群 / 表現 / 指標 / 代数学
Research Abstract

Gauss sum, which depends on a prime p, was considered by F. Gauss about 200 years ago and he determined the value beautifully. Since the sum is over 0 to p-1, it can be regarded as a sum over a finite prime field. There has been many works which extend the results. In this research, we defined a Gauss sum for arbitrary finite groups, and determined its value explicitly, particularly for basic finite groups, like symmetric groups and some complex reflection groups

Report

(5 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (15 results)

All 2013 2012 2011 2010 2009 Other

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (8 results)

  • [Journal Article] Number of solutions of equations of Weil type on finite symmetric matrices2013

    • Author(s)
      Ma. N. M. Abara and Ken-ichi Shinoda
    • Journal Title

      Linear Algebra and its Applications

      Volume: vol.438 Pages: 4322-4334

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Number of solutions of equations of Weil type on finite symmetric matrices2013

    • Author(s)
      Ma. N. M. Abara and K. Shinoda
    • Journal Title

      Linear Algebra and its Applications

      Volume: 438 Pages: 4322-4334

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gauss sums on finite groups2012

    • Author(s)
      Yasushi Gomi, Taiki Maeda and Ken-ichi Shinoda
    • Journal Title

      Tokyo J. Mathematics

      Volume: vol. 35 Pages: 165-179

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Gauss sums on finite groups2012

    • Author(s)
      Y. Gomi, T. Maeda and K. Shinoda
    • Journal Title

      Tokyo Journal of Mathematics

      Volume: 35 Pages: 165-179

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Universal tropical R map of sl(2)and prehomogeneous geometric crystals2009

    • Author(s)
      T.Nakashima
    • Journal Title

      RIMS Kokyuroku Bessatu B11

      Pages: 101-116

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gauss sums of finite groups

    • Author(s)
      Y.Gomi, T.Maeda, K.Shinoda
    • Journal Title

      Tokyo Journal of Mathematics

      Volume: (35巻掲載予定)

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gauss sums on finite groups

    • Author(s)
      Y.Gomi
    • Journal Title

      Tokyo Journal of Mathematics

      Volume: (to appear 未定)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Gauss sums on finite reductive groups and character sums2013

    • Author(s)
      Ken-ichi Shinoda
    • Organizer
      The 55^<th> KPPY Combinatorics Seminar
    • Place of Presentation
      Yeungnam University、Korea
    • Year and Date
      2013-03-23
    • Related Report
      2012 Final Research Report
  • [Presentation] Gauss sums on finite groups and Hecke algebras2012

    • Author(s)
      Ken-ichi Shinoda
    • Organizer
      Conference on Representation Theory of Chevalley Groups and Related Topics
    • Place of Presentation
      名古屋大学
    • Year and Date
      2012-03-12
    • Related Report
      2012 Final Research Report
  • [Presentation] Gauss sums on finite groups and Hecke algebras2012

    • Author(s)
      筱田健一
    • Organizer
      Conference on Representation Theory of Chevalley Groups and Related Topics
    • Place of Presentation
      名古屋大学(招待講演)
    • Year and Date
      2012-03-12
    • Related Report
      2011 Annual Research Report
  • [Presentation] Characters of endomorphism algebras of Gelfand - Graev representations2011

    • Author(s)
      Ken-ichi Shinoda
    • Organizer
      Shanghai workshop on representation theory
    • Place of Presentation
      East China Normal Univ
    • Year and Date
      2011-12-10
    • Related Report
      2012 Final Research Report
  • [Presentation] Characters of endomorphism algebras of Gelfand-Graev representations2011

    • Author(s)
      筱田健一
    • Organizer
      Shanghai workshop on representation theory
    • Place of Presentation
      East China Normal Univ.(招待講演)
    • Year and Date
      2011-12-10
    • Related Report
      2011 Annual Research Report
  • [Presentation] Gauss sums on finite groups2010

    • Author(s)
      筱田健一
    • Organizer
      日本数学会秋季総合分科会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2010-09-22
    • Related Report
      2012 Final Research Report 2010 Annual Research Report
  • [Presentation] 有限群のガウス和2009

    • Author(s)
      K.Shinoda
    • Organizer
      「ゲーム理論と表現論」研究集会
    • Place of Presentation
      稚内北星学園大学
    • Year and Date
      2009-08-24
    • Related Report
      2009 Annual Research Report
  • [Presentation] Gauss sums on finite reductive groups and character sums

    • Author(s)
      Ken-ichi Shinoda
    • Organizer
      The 55th KPPY Combinatorics Seminar
    • Place of Presentation
      Yeungnam University, Korea
    • Related Report
      2012 Annual Research Report

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Published: 2009-04-01   Modified: 2019-07-29  

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