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Towards ramification theory of automorphic representations : Ramified representations and their L-factors

Research Project

Project/Area Number 19540032
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

ISHIKAWA Yoshihiro  Okayama University, 大学院・自然科学研究科, 助教 (50294400)

Co-Investigator(Kenkyū-buntansha) 森山 知則  大阪大学, 大学院・理学研究科, 准教授 (80384171)
安田 正大  京都大学, 数理解析研究所, 助教 (90346065)
吉野 雄二  岡山大学, 大学院・自然科学研究科, 教授 (00135302)
高野 啓児  明石工業高等専門学校, 一般教育, 准教授 (40332043)
若槻 聡  金沢大学, 大学院・自然科学研究科, 助教 (10432121)
Co-Investigator(Renkei-kenkyūsha) MORIYAMA Tomonori  大阪大学, 大学院・理学研究科, 准教授 (80384171)
YASUDA Seidai  京都大学, 数理解析研究所, 助教 (90346065)
YOSHINO Yuji  岡山大学, 大学院・自然科学研究科, 教授 (00135302)
TAKANO Keiji  明石工業高等専門学校, 一般教育, 准教授 (40332043)
WAKATSUKI Satoshi  金沢大学, 大学院・自然科学研究科, 助教 (10432121)
Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2007: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords保型形式 / 表現論 / L-関数
Research Abstract

フェルマ予想(FLT)の様な数論の問題は, 非常に広範で深い理論を駆使して研究される。FLTの証明をも含み, 70年代より数論研究の支柱たり続けているLanglandsプログラムに沿って, 比較的小さい群U(3), GSp(4)の場合に, その分岐表現と付随するL-関数を研究した。方針は, L-関数を上の群を対称性にもつ保型形式という"関数"の積分変換で表示し, その積分の分岐因子を(一般化)ホイタッカー関数を通じて明示的に研究する。表現の分岐が激しくない簡易な場合に, L-因子を計算した。分岐が激しい場合にも, 部分群からのアプローチが有効で有ることが判った。

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (28 results)

All 2009 2008 2007 Other

All Journal Article (9 results) (of which Peer Reviewed: 6 results) Presentation (18 results) Remarks (1 results)

  • [Journal Article] Rankin-Selberg method -through typical examples-2009

    • Author(s)
      石川佳弘
    • Journal Title

      整数論サマースクール報告集第16回

      Pages: 249-331

    • Related Report
      2008 Final Research Report
  • [Journal Article] 保型表現の分岐と導手-JPSS理論の紹介-prerpint, 2008 May2009

    • Author(s)
      石川佳弘
    • Journal Title

      京都大学数理解析研究所講究録別冊 (掲載予定)

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Rankiu-Selberg method--through typical examples--2009

    • Author(s)
      石川 佳弘
    • Journal Title

      整数論サマースクール報告集 第1 6巻

      Pages: 249-331

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Spinor L-functions for generic cusp forms on $GSp(2)$ belonging to principal series representations2008

    • Author(s)
      Taku Ishii and Tomonori Moriyama
    • Journal Title

      Trans. Amer. Math. Soc 360

      Pages: 5683-5709

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] L. Lafforgue氏の業績-関数体上のGL_rに対するLanglands対応の確立-2008

    • Author(s)
      安田正大
    • Journal Title

      数学 60

      Pages: 415-424

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Subrepresentation theorem for p-adic symmetric spaces2008

    • Author(s)
      Shinichi Kato and Keiji Takano
    • Journal Title

      Int. Math. Res. Notices No.11

      Pages: 1-40

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Kudla's Yoga-A heigher(co-)dimensional generalization-prerpint2007

    • Author(s)
      石川佳弘
    • Journal Title

      研究集会Heegner pointとGross-Zagier公式 (報告集掲載予定)

    • Related Report
      2008 Final Research Report
  • [Journal Article] Local epsilon_0-characters in torsion rings2007

    • Author(s)
      Seidai Yasuda
    • Journal Title

      J. Theor. Nomb. Bordeaux 19

      Pages: 763-797

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] L-functions for $GSp(2)\times GL(2)$ : archimedean theory and applications

    • Author(s)
      Tomonori Moriyama
    • Journal Title

      Canadian Journal of Mathematics (採録決定済み)

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Presentation] 保型表現のイプシロン因子と導手2009

    • Author(s)
      石川佳弘
    • Organizer
      研究集会「数論幾何における分岐理論」
    • Place of Presentation
      神戸フルーツフラワーパーク
    • Year and Date
      2009-10-12
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] 2次実解析的Siegel保型形式から定義されるL関数について2008

    • Author(s)
      森山知則
    • Organizer
      数学談話会
    • Place of Presentation
      大阪大学理学研究科
    • Year and Date
      2008-12-17
    • Related Report
      2008 Final Research Report
  • [Presentation] 保型表現の分岐と導手-JPSS理論の紹介-2008

    • Author(s)
      石川佳弘
    • Organizer
      研究集会「代数的整数論とその周辺」
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2008-12-11
    • Related Report
      2008 Final Research Report
  • [Presentation] 保型表現の分岐と導手-JPSS理論の紹介--2008

    • Author(s)
      石川 佳弘
    • Organizer
      研究集会「代数的整数論とその周辺」
    • Place of Presentation
      京大数理解祈研究所
    • Year and Date
      2008-12-11
    • Related Report
      2008 Annual Research Report
  • [Presentation] Regulators on Drinfeld modular varieties and periods of automorphic forms2008

    • Author(s)
      Seidai Yasuda
    • Organizer
      Number Theory seminar
    • Place of Presentation
      Nottingham Univ
    • Year and Date
      2008-11-14
    • Related Report
      2008 Final Research Report
  • [Presentation] Diagonal periods of GL(n)over the rational function field2008

    • Author(s)
      Seidai Yasuda
    • Organizer
      London Number Theory seminar
    • Place of Presentation
      Imperial College London
    • Year and Date
      2008-11-12
    • Related Report
      2008 Final Research Report
  • [Presentation] Rankin-Selberg convolutions for GSp(2)x GL(2) : Archimedean theory and applications2008

    • Author(s)
      森山知則
    • Organizer
      大阪大学整数論・保型形式セミナー
    • Place of Presentation
      大阪大学理学研究科
    • Year and Date
      2008-11-09
    • Related Report
      2008 Final Research Report
  • [Presentation] Rankin-Selberg method -through typical examples-2008

    • Author(s)
      石川佳弘
    • Organizer
      第16回整数論サマースクール「保型L-関数」
    • Place of Presentation
      幕張メッセ国際会議場
    • Year and Date
      2008-08-20
    • Related Report
      2008 Final Research Report
  • [Presentation] Langalands-Shahidi method概説2008

    • Author(s)
      森山知則
    • Organizer
      第16回整数論サマースクール「保型L-関数」
    • Place of Presentation
      幕張メッセ国際会議場
    • Year and Date
      2008-08-20
    • Related Report
      2008 Final Research Report
  • [Presentation] Rankin-Selberg methocd--throucgh typical examples--2008

    • Author(s)
      石川 佳弘
    • Organizer
      第1 6回整数論サマースクール
    • Place of Presentation
      幕張メッセ国際会議場
    • Year and Date
      2008-08-20
    • Related Report
      2008 Annual Research Report
  • [Presentation] Does Tate conjecture imply the standard conjecture?2008

    • Author(s)
      Seidai Yasuda
    • Organizer
      Recent developments on algebraic K-theory and motive theory
    • Place of Presentation
      RIMS
    • Year and Date
      2008-07-02
    • Related Report
      2008 Final Research Report
  • [Presentation] Rankin-Selberg convolutions for GSp(2)xGL(2) : archimedean theory and applications2008

    • Author(s)
      森山知則
    • Organizer
      the 22nd annual workshop on automorphic forms and related topics
    • Place of Presentation
      Texas A&M Univ
    • Year and Date
      2008-03-11
    • Related Report
      2008 Final Research Report
  • [Presentation] On traces of Hecke operators on spaces of Siegel cusp forms of degree two2008

    • Author(s)
      若槻聡
    • Organizer
      研究集会「保型表現・保型形式とL関数の周辺」
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2008-01-24
    • Related Report
      2008 Final Research Report
  • [Presentation] On traces of Hecke operators on spaces of Siegel cusp forms of degree two2007

    • Author(s)
      Satoshi Wakatsuki
    • Organizer
      The 10th Autumn Workshop on Number Theory
    • Place of Presentation
      白馬ハイマウントホテル
    • Year and Date
      2007-11-24
    • Related Report
      2008 Final Research Report
  • [Presentation] Explicit dimension formulas for spaces of vector valued Siegel cusp forms of degree two2007

    • Author(s)
      Satoshi Wakatsuki
    • Organizer
      Oberwolfach Workshop "Modulformen"
    • Place of Presentation
      Oberwolfach Germany
    • Year and Date
      2007-10-30
    • Related Report
      2008 Final Research Report
  • [Presentation] Kudla' Yoga : A higher(co-)dimensional generalization,2007

    • Author(s)
      石川佳弘
    • Organizer
      研究集会「Heegner pointとGross-Zagier公式」
    • Place of Presentation
      東北大学理学部
    • Year and Date
      2007-10-12
    • Related Report
      2008 Final Research Report
  • [Presentation] Kudla's Yoga : A higher (co-)dimensional generalizasion2007

    • Author(s)
      石川 佳弘
    • Organizer
      研究集会「Heegner points と Gross-Zagier公式
    • Place of Presentation
      東北大学・理学部
    • Year and Date
      2007-10-12
    • Related Report
      2007 Annual Research Report
  • [Presentation] ヘッケ作用素の明示的跡公式について2007

    • Author(s)
      若槻聡
    • Organizer
      大阪大学整数論保型形式セミナー
    • Year and Date
      2007-06-22
    • Related Report
      2008 Final Research Report
  • [Remarks]

    • URL

      http://www.math.okayama-u.ac.jp/~ishikawa/Conference/09-01_RIMS/RIMS-09-J.html

    • Related Report
      2008 Annual Research Report

URL: 

Published: 2007-04-01   Modified: 2016-04-21  

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