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Properties of the associated spaces of polynomials which satisfy local functional equations

Research Project

Project/Area Number 24540049
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Algebra
Research InstitutionJosai University

Principal Investigator

Kogiso Takeyoshi  城西大学, 理学部, 教授 (20282296)

Project Period (FY) 2012-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords局所関数等式 / homaloidal polynomial / Legendre変換 / Fourier変換 / Clifford algenbra / 概均質ベクトル空間 / Jordan algebra / 多項式の極化 / Clifford algebra / 2次写像 / homaloidal多項式 / 乗法的Legendre変換 / b-関数 / Jordan代数 / Clifford quartic forms / Quadratic mappings / Hopfmappings / Legrndre変換 / Clifford代数 / homaliodal map / 国際研究者交流(フランス)
Outline of Final Research Achievements

It is known that one can associate local zeta functions satisfying a functional equation to the irreducible relative invariant of an irreducible regular prehomogeneous vector space. We construct polynomials of degree 4 (called Clifford quartic forms) that cannot be obtained from prehomogeneous vector spaces, but for which one can associate local zeta functions satisfying functional equations.The following study results were obtained. (1) We solved a conjecture by Etingof, Kazhdan and Polishchuk by using Clifford quartic forms(This is joint work with F.Sato).(2)We determined the multiplicative Legendre transformations for subHankel determinant and gave a conjecture for the form of the associated b-functions.This conjecture is still open.(This is joint work with H.Ishi) (3) We gave a conjecture for the form of b-fucntion and one of the gamma factor of local functional equation with respect to the polarization of a homaloidal polynomial (This conjecture was solved by F.Sato recently.)

Report

(5 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • 2012 Research-status Report

Research Products

(27 results)

All 2016 2015 2014 2013 2012

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (19 results) (of which Int'l Joint Research: 1 results,  Invited: 13 results) Book (1 results)

  • [Journal Article] Castling transforms of Prehomogeneous vector spaces and Markoff numbers2015

    • Author(s)
      Takeyoshi Kogiso
    • Journal Title

      Proceedings of the 8th. International Conference on Nonlinear Analysis and Convex Analysis

      Volume: vol.1 Pages: 271-287

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Castling transforms of prehomogeneous vector spaces and Markoff numbers2015

    • Author(s)
      Takeyoshi Kogiso
    • Journal Title

      Proceedings of the 8th. International Conference on Nonlinear Analysis and Convex Analysis

      Volume: 1

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Journal Article] On a certain class of cuspidal prehomogeneous vector spaces and its basic relative invariants.2013

    • Author(s)
      Takeyoshi Kogiso and Yoshiteru Kurosawa
    • Journal Title

      Josai Mathematical Monograph

      Volume: vol.6

    • NAID

      120005520761

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Representation of Clifford Algebras and local functional equations.2012

    • Author(s)
      Fumihiro Sato and Takeyoshi Kogiso
    • Journal Title

      RIMS-Kokyuroku-Bessatsu

      Volume: B36

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Fourier transforms of the polynomials with local functional equations.2012

    • Author(s)
      Takeyoshi Kogiso
    • Journal Title

      Proceedings of the International Conference on Nonlinear Analysis and Convex Analysis

      Volume: -I-(BUsan,Korea) Pages: 241-254

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Prehomogeneous vector spaces and their regularity2012

    • Author(s)
      Tatsuo Kimura, Takeyoshi Kogiso, Yoshiteru Kurosawa and Masaya Ouchi
    • Journal Title

      Josai Mathematical Monograph

      Volume: vol.5

    • NAID

      120005520771

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] A classification of some prehomogeneous vector spaces related with hypergeometric functions2012

    • Author(s)
      Tatsuo Kimura, Takeyoshi Kogiso and Masaya Ouchi
    • Journal Title

      Josai Mathematical Monograph

      Volume: vol.5

    • NAID

      120005520772

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Local functional equations of non-prehomogeneous type2016

    • Author(s)
      Takeyoshi Kogiso
    • Organizer
      International Conference, Geometry, Representation Theory and Differential Equations
    • Place of Presentation
      九州大学伊都キャンパスIMI
    • Year and Date
      2016-02-19
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ある種のgeneric catalecticantのLegendre変換とb-関数2016

    • Author(s)
      小木曽岳義
    • Organizer
      表現論ワークショップ
    • Place of Presentation
      ふれあい会館生涯学習センター、鳥取市
    • Year and Date
      2016-01-10
    • Related Report
      2015 Annual Research Report
  • [Presentation] Local functional equations of Clifford quartic forms and homalidal EKP plynomials2015

    • Author(s)
      小木曽岳義
    • Organizer
      Lie群論・表現論セミナー
    • Place of Presentation
      東京大学大学院数理科学研究科
    • Year and Date
      2015-05-26
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] Representations of Clifford algebras and Hurwitz pairs2015

    • Author(s)
      Takeyoshi Kogiso
    • Organizer
      Workshop of Deformation of discrete groups and related topics
    • Place of Presentation
      名古屋大学多元数理科学研究科
    • Year and Date
      2015-02-18
    • Related Report
      2014 Research-status Report
  • [Presentation] Multiplicative Legendre変換と局所関数等式2014

    • Author(s)
      小木曽岳義
    • Organizer
      表現論ワークショップ
    • Place of Presentation
      ふれあい会館生涯学習センター
    • Year and Date
      2014-12-26
    • Related Report
      2014 Research-status Report
  • [Presentation] Clifford quartic forms and local functional equations2014

    • Author(s)
      Takeyoshi Kogiso
    • Organizer
      Analysis, Geometry and representations on Lie Groups and Homogeneous spaces
    • Place of Presentation
      Marrakech, Morroco
    • Year and Date
      2014-12-18
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] 概均質ベクトル空間とその仲間たち2014

    • Author(s)
      小木曽岳義
    • Organizer
      東海大学理学部数学科・情報学科談話会
    • Place of Presentation
      東海大学理学部湘南校舎18号館8階ゼミ室3
    • Year and Date
      2014-10-28
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] 非概均質的局所関数等式について2013

    • Author(s)
      小木曽岳義
    • Organizer
      早稲田大学整数論セミナー
    • Place of Presentation
      早稲田大学西早稲田キャンパス61号館4階413教室
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Clifford quadratic forms and nonprehomogeneous local functional equations2013

    • Author(s)
      小木曽岳義
    • Organizer
      数理解析研究所研究集会 Development of representation theory and its related fields
    • Place of Presentation
      京都大学数理解析研究所
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Castling transforms of prehomogeneous vector spaces and Markoff numbers2013

    • Author(s)
      Takeyoshi Kogiso
    • Organizer
      The eight international conference on nonlinear analysis and convex analysis 2013
    • Place of Presentation
      弘前大学50周年会館
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Representations of Clifford algebras and local functional equations2013

    • Author(s)
      Takeyoshi Kogiso
    • Organizer
      JSPS-NWOSEminar, 日本オランダ二国間交流共同セミナー, Analysis, Geometry and Group representations for homogeneous spaces
    • Place of Presentation
      名古屋大学多元数理科学研究科5階講義室
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] EKP-homaloidal functionについて2013

    • Author(s)
      小木曽岳義
    • Organizer
      表現論ワークショップ
    • Place of Presentation
      京都大学大学院理学研究科セミナーハウス
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] 乗法的Legendre変換と局所関数等式2013

    • Author(s)
      小木曽岳義
    • Organizer
      日蘭セミナー整理会
    • Place of Presentation
      九州大学大学院数理科学研究科中セミナー室7
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Representations of Clifford algebras and local functional equations2013

    • Author(s)
      小木曽岳義
    • Organizer
      九州大学大学院数理学府表現論セミナー
    • Place of Presentation
      九州大学大伊都キャンパス
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] 局所関数等式を満たす多項式のペアについて2012

    • Author(s)
      小木曽岳義
    • Organizer
      筑波大学数学系特別セミナー
    • Place of Presentation
      筑波大学数理物質数学類
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] Clifford 代数の表現から得られる局所関数等式2012

    • Author(s)
      小木曽岳義
    • Organizer
      近畿大学理工学部数学科講演会
    • Place of Presentation
      近畿大学理工学部数学科
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] Quadratic maps to PV's and local functional equations2012

    • Author(s)
      小木曽岳義
    • Organizer
      Workshop of Josai mathematical Monograph
    • Place of Presentation
      城西大学紀尾井町キャンパス
    • Related Report
      2012 Research-status Report
  • [Presentation] Quadratic maps to PV's and local functional equations2012

    • Author(s)
      小木曽岳義
    • Organizer
      Kyoto Conference on Automorphic Forms
    • Place of Presentation
      京都大学理学部数学教室
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] PVの裏返し変換の一考察2012

    • Author(s)
      小木曽岳義
    • Organizer
      表現論ワークショップ
    • Place of Presentation
      鳥取市国民ふれあい会館会議室
    • Related Report
      2012 Research-status Report
  • [Book] 「表現論の世界」(の担当分「関数等式と表現論」)2013

    • Author(s)
      小木曽岳義
    • Publisher
      サイエンス社
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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