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Geometry of modular varieties and congruence, P-adic theory of Siegel modular forms

Research Project

Project/Area Number 20540018
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

ICHIKAWA Takashi  Saga University, 大学院・工学系研究科, 教授 (20201923)

Co-Investigator(Kenkyū-buntansha) NAGAOKA SHOUYU  近畿大学, 理工学部, 教授 (20164402)
Co-Investigator(Renkei-kenkyūsha) UEHARA Tsuyoshi  佐賀大学, 大学院・工学系研究科, 教授 (80093970)
MIYAZAKI Chikashi  佐賀大学, 大学院・工学系研究科, 教授 (90229831)
TERAI Naoki  佐賀大学, 文化教育学部, 准教授 (90259862)
Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsモジュラー多様体 / モジュラー形式 / 合同 / モジュラー様体 / ジーゲル保型形式 / 保型形式の合同 / P進保型形式 / ベクトル値保型形式 / テータ関数 / ショットキー問題 / ソリトン方程式 / リーマン面 / ベクトル束 / アーベル・ヤコビ写像 / ジーゲル・モジュラー形式 / p進モジュラー形式 / モジュラー曲線 / 志村積分 / アイゼンシュタイン級数 / p進理論 / モノドロミー / 保型形式環 / 数論幾何 / 代数幾何
Research Abstract

By studying arithmetic geometry of Siegel modular varieties, we solved the congruence problem of Siegel modular forms, and showed that weights of p-adicSiegel modular forms are determined as p-adic numbers. Further, we constructed a basictheory of arithmetic vector-valued Siegel modular forms and vector-valued p-adic Siegel modular forms with natural p-adic operators. Moreover, we studied the ring structure ofSiegel modular forms over rings in which 6 is invertible, and decided this structure in the degree 2 case.

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (19 results)

All 2011 2010 2009 2008

All Journal Article (15 results) (of which Peer Reviewed: 15 results) Presentation (4 results)

  • [Journal Article] Vector bundles on a nearly degenerate Riemann surface2011

    • Author(s)
      Takashi Ichikawa
    • Journal Title

      Mathematische Zeitschrift 印刷中

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] On Hermitian modular forms mod p2011

    • Author(s)
      T.Kikuta, Shoyu Nagaoka
    • Journal Title

      J.Math.Soc.Japan 63

      Pages: 211-238

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Vector bundles on a nearly degenerate Riemann surface2011

    • Author(s)
      Takashi Ichikawa
    • Journal Title

      Mathematische Zeitschrift

      Volume: (印刷中)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On Hermitian modular forms mod p2011

    • Author(s)
      T.Kikuta, Shoyu Nagaoka
    • Journal Title

      J.Math.Soc.Japan

      Volume: 63 Pages: 211-238

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On Siegel modular forms of level p and their properties mod p2010

    • Author(s)
      S.Boecherer, Shoyu Nagaoka
    • Journal Title

      manuscripta mathematica 132

      Pages: 501-515

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] On Siegel modular forms of level p and their properties mod p2010

    • Author(s)
      S.Boecherer, Shoyu Nagaoka
    • Journal Title

      manuscripta mathematica

      Volume: 132 Pages: 501-515

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Vector bundles on a nearly degenerate Riemann surface2010

    • Author(s)
      Takashi Ichikawa
    • Journal Title

      Mathematische Zeitschrift (印刷中)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On Siegel modular forms of level p and their properties modp2010

    • Author(s)
      S.Boecherer, S.Nagaoka
    • Journal Title

      manuscripta mathematica (印刷中)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Congruence Properties of Hermitian modular forms2009

    • Author(s)
      T.Kikuta, Shoyu Nagaoka
    • Journal Title

      Proc.A.M.S. 137

      Pages: 1179-1184

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Siegel modular forms of degree 2 over rings2009

    • Author(s)
      Takashi Ichikawa
    • Journal Title

      J.Number Theory 129

      Pages: 818-823

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Congruence Properties of Hermitian modular forms2009

    • Author(s)
      T.Kikuta, S.Nagaoka
    • Journal Title

      Proc.A.M.S. 137

      Pages: 1179-1184

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Siegel modular forms of degree 2 over rings2009

    • Author(s)
      Takashi Ichikawa
    • Journal Title

      J. Number Theory 129

      Pages: 818-823

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Congruence properties of Hermitian modular forms2009

    • Author(s)
      T. Kikuta, S. Nagaoka
    • Journal Title

      Proc. Amer. Math. Soc. 137

      Pages: 1179-1184

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Congruences between Siegel modular forms2008

    • Author(s)
      Takashi Ichikawa
    • Journal Title

      Math.Ann. 342

      Pages: 527-532

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Congruences between Siegel modular forms2008

    • Author(s)
      Takashi Ichikawa
    • Journal Title

      Math. Ann. 342

      Pages: 527-532

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] Motivic properties of modular groups2010

    • Author(s)
      市川尚志
    • Organizer
      Galois Theoretic Arithmetic Geometry
    • Place of Presentation
      国際高等研究所
    • Year and Date
      2010-10-22
    • Related Report
      2010 Annual Research Report 2010 Final Research Report
  • [Presentation] Noncommutative modular symbols2009

    • Author(s)
      市川尚志
    • Organizer
      野田モジュラー多様体研究集会
    • Place of Presentation
      東京理科大学
    • Year and Date
      2009-12-24
    • Related Report
      2010 Final Research Report 2009 Annual Research Report
  • [Presentation] Galois action on the ni lpotent completions of modulargroups2008

    • Author(s)
      市川尚志
    • Organizer
      ガロア理論とその周辺徳島2008
    • Place of Presentation
      徳島大学
    • Year and Date
      2008-09-11
    • Related Report
      2010 Final Research Report
  • [Presentation] Galois action on the nilpotent completions of modular groups2008

    • Author(s)
      市川 尚志
    • Organizer
      ガロア理論とその周辺 徳島2008
    • Place of Presentation
      徳島大学
    • Year and Date
      2008-09-11
    • Related Report
      2008 Annual Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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