• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Various modular forms and these applications for Number Theory

Research Project

Project/Area Number 23740011
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Algebra
Research InstitutionKeio University (2013)
The University of Tokyo (2011-2012)

Principal Investigator

TAKAI Yuuki  慶應義塾大学, 理工学部, 特任助教 (90599698)

Project Period (FY) 2011 – 2013
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords保型形式 / Galois 群 / Hilbert 保型形式 / 相対類数 / 保型 L-関数 / Sturm の定理 / L-関数の特殊値 / Abel 多様体 / 類数問題 / 保型L-関数 / Hilbert モジュラー形式 / 半整数ウエイト保型形式 / アーベル多様体 / 相対類数の非可除性 / 相対岩澤不変量の消滅 / 半整数ウエイト Hilbert 保型形式 / L-関数の特殊値 / 重さ半整数の保型形式 / Galois 表現
Research Abstract

Combining properties of modular forms and Galois groups, I studied some applications for number theory. In particular, the main purpose is to extend some arithmetic results on the rational field to them on more general fields. To do this, I studied property of Hilbert modular forms as a tool and applied to the class number problem for CM quadratic extension.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (35 results)

All 2014 2013 2012 2011 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (30 results) (of which Invited: 4 results) Remarks (2 results)

  • [Journal Article] On indivisibility of relative class numbers of totally maginary quadratic extensions and these relative Iwasawa invariants2014

    • Author(s)
      Yuuki Takai
    • Journal Title

      Proceedings of the Japan Academy, Series A, Mathematical Sciences

      Volume: 90.2 Pages: 33-36

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] On indivisibility of relative class numbers of totally imaginary quadratic extensions and these relative Iwasawa invariants2014

    • Author(s)
      Yuuki Takai
    • Journal Title

      Proceedings of the Japan Academy, Series A, Mathematical Sciences

      Volume: 90.2 Pages: 33-36

    • NAID

      40019983609

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] An analogue of Sturm's theorem for Hilbert modular forms2013

    • Author(s)
      Yuuki Takai
    • Journal Title

      Algebra and Number Theory

      Volume: 7:4 Pages: 1001-1018

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Presentation] 総虚二次拡大の相対類数の非可除性とそれらの相対岩澤不変量の消滅2014

    • Author(s)
      高井勇輝
    • Organizer
      九州代数的整数論2014
    • Place of Presentation
      九州大学
    • Year and Date
      2014-02-07
    • Related Report
      2013 Final Research Report
  • [Presentation] Indivisibility of relative class numbers of CM quadratic extensions and vanishing of relative Iwasawa invariants2013

    • Author(s)
      Yuuki Takai
    • Organizer
      Number Theory Seminar
    • Place of Presentation
      Stanford University
    • Year and Date
      2013-11-08
    • Related Report
      2013 Final Research Report
  • [Presentation] Indivisibility of relative class numbers of CM quadratic extensions and vanishing of relative Iwasawa invariants2013

    • Author(s)
      Yuuki Takai
    • Organizer
      Number Theory Seminar
    • Place of Presentation
      UC Berkeley
    • Year and Date
      2013-10-09
    • Related Report
      2013 Final Research Report
  • [Presentation] A determining condition of Hilbert modular forms2013

    • Author(s)
      Yuuki Takai
    • Organizer
      Algebra Seminar
    • Place of Presentation
      Emory University(アトランタ)
    • Year and Date
      2013-09-03
    • Related Report
      2013 Final Research Report
  • [Presentation] A determining condition of Hilbert modular forms2013

    • Author(s)
      Yuuki Takai
    • Organizer
      KIAS Number Theory Seminar
    • Place of Presentation
      KIAS(ソウル)
    • Year and Date
      2013-08-08
    • Related Report
      2013 Final Research Report
  • [Presentation] Indivisibility of relative class numbers of CM quadratic extensions and vanishing of these relative Iwasawa invariants2013

    • Author(s)
      Yuuki Takai
    • Organizer
      Seminarin Seoul National University
    • Place of Presentation
      ソウル大学
    • Year and Date
      2013-08-05
    • Related Report
      2013 Final Research Report
  • [Presentation] 総虚二次拡大の相対類数の非可除性とそれらの相対岩澤不変量の消滅2013

    • Author(s)
      高井勇輝
    • Organizer
      香川セミナー
    • Place of Presentation
      香川大学
    • Year and Date
      2013-06-22
    • Related Report
      2013 Final Research Report
  • [Presentation] 総虚二次拡大の相対類数の非可除性とそれらの相対岩澤不変量の消滅について2013

    • Author(s)
      高井勇輝
    • Organizer
      岩澤理論セミナー
    • Place of Presentation
      慶應義塾大学
    • Year and Date
      2013-05-27
    • Related Report
      2013 Final Research Report
  • [Presentation] 総実数体の総虚二次拡大体の相対類数の非可除性について2013

    • Author(s)
      高井勇輝
    • Organizer
      日本数学会2013年度年会
    • Place of Presentation
      京都大学
    • Year and Date
      2013-03-23
    • Related Report
      2013 Final Research Report
  • [Presentation] Indivisibility of relative class numbers of CM quadratic extensions of totally real Galoisnumber fields2013

    • Author(s)
      Yuuki Takai
    • Organizer
      Korea-Japan Joint Seminar on Number Theory and Related Topics
    • Place of Presentation
      Ewha womans university, Korea
    • Year and Date
      2013-01-24
    • Related Report
      2013 Final Research Report
  • [Presentation] CM体の相対類数の非可除性について2012

    • Author(s)
      高井勇輝
    • Organizer
      早稲田整数論セミナー
    • Place of Presentation
      早稲田大学
    • Year and Date
      2012-11-23
    • Related Report
      2013 Final Research Report
  • [Presentation] CM体の相対類数の非可除性について2012

    • Author(s)
      高井勇輝
    • Organizer
      北陸数論セミナー
    • Place of Presentation
      金沢大学サテライトプラザ
    • Year and Date
      2012-07-19
    • Related Report
      2013 Final Research Report
  • [Presentation] On Sturm's theorem formodular forms2012

    • Author(s)
      Yuuki Takai
    • Organizer
      The 3rd Keio-YonseiWorkshop
    • Place of Presentation
      慶應義塾大学
    • Year and Date
      2012-05-24
    • Related Report
      2013 Final Research Report
  • [Presentation] An analogue of Sturm'stheorem for Hilbert modular forms2011

    • Author(s)
      Yuuki Takai
    • Organizer
      Japan-Korea Number Theory Seminar
    • Place of Presentation
      名古屋大学
    • Year and Date
      2011-11-10
    • Related Report
      2013 Final Research Report
  • [Presentation] An analogue of Sturm'stheorem for Hilbert modular forms2011

    • Author(s)
      高井勇輝
    • Organizer
      第10回広島仙台整数論研究集会
    • Place of Presentation
      広島大学
    • Year and Date
      2011-07-20
    • Related Report
      2013 Final Research Report
  • [Presentation] An analogue of Sturm'stheorem for Hilbert modular forms2011

    • Author(s)
      高井勇輝
    • Organizer
      代数セミナー
    • Place of Presentation
      慶應義塾大学
    • Year and Date
      2011-06-30
    • Related Report
      2013 Final Research Report
  • [Presentation] Sturmの定理の Hilbert保型形式に対する類似2011

    • Author(s)
      高井勇輝
    • Place of Presentation
      東京大学
    • Year and Date
      2011-04-27
    • Related Report
      2013 Final Research Report
  • [Presentation] 総虚二次拡大の相対類数の非可除性とそれらの相対岩澤不変量の消滅について

    • Author(s)
      高井 勇輝
    • Organizer
      岩澤理論セミナー
    • Place of Presentation
      慶應義塾大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] 総虚二次拡大の相対類数の非可除性と それらの相対岩澤不変量の消滅

    • Author(s)
      高井 勇輝
    • Organizer
      香川セミナー
    • Place of Presentation
      香川大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] Indivisibility of relative class numbers of CM quadratic extensions and vanishing of these relative Iwasawa invariants

    • Author(s)
      Yuuki Takai
    • Organizer
      Number Theory Seminar
    • Place of Presentation
      ソウル大学(韓国)
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] A determining condition of Hilbert modular forms

    • Author(s)
      Yuuki Takai
    • Organizer
      KIAS Number Theory Seminar
    • Place of Presentation
      KIAS(韓国)
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] A determining condition of Hilbert modular forms

    • Author(s)
      Yuuki Takai
    • Organizer
      Algebra Seminar
    • Place of Presentation
      Emory University (アメリカ)
    • Related Report
      2013 Annual Research Report
  • [Presentation] Indivisibility of relative class numbers of CM quadratic extensions and vanishing of these relative Iwasawa invariants

    • Author(s)
      Yuuki Takai
    • Organizer
      Number Theory Seminar
    • Place of Presentation
      UC Berkeley (アメリカ)
    • Related Report
      2013 Annual Research Report
  • [Presentation] Indivisibility of relative class numbers of CM quadratic extensions and vanishing of relative Iwasawa invariants

    • Author(s)
      Yuuki Takai
    • Organizer
      Number Theory Seminar
    • Place of Presentation
      Stanford University (アメリカ)
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] 総虚二次拡大の相対類数の非可除性とそれらの相対岩澤不変量の消滅

    • Author(s)
      高井 勇輝
    • Organizer
      九州代数的整数論2014
    • Place of Presentation
      九州大学
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] On Sturm's theorem for modular forms

    • Author(s)
      Yuuki Takai
    • Organizer
      The 3rd Keio-Yonsei Workshop
    • Place of Presentation
      慶應義塾大学
    • Related Report
      2012 Research-status Report
  • [Presentation] CM 体の相対類数の非可除性について

    • Author(s)
      高井 勇輝
    • Organizer
      北陸数論セミナー
    • Place of Presentation
      金沢サテライトプラザ
    • Related Report
      2012 Research-status Report
  • [Presentation] CM 体の相対類数の非可除性について

    • Author(s)
      高井 勇輝
    • Organizer
      早稲田整数論セミナー
    • Place of Presentation
      早稲田大学
    • Related Report
      2012 Research-status Report
  • [Presentation] Indivisibility of relative class numbers of CM quadratic extensions of totally real Galois number fields

    • Author(s)
      Yuuki Takai
    • Organizer
      Korea-Japan Joint Seminar on Number Theory and Related Topics
    • Place of Presentation
      Ewha womans university, Korea
    • Related Report
      2012 Research-status Report
  • [Presentation] 総実数体の総虚二次拡大体の相対類数の非可除性について

    • Author(s)
      高井 勇輝
    • Organizer
      日本数学会2013年度年会
    • Place of Presentation
      京都大学
    • Related Report
      2012 Research-status Report
  • [Remarks]

    • URL

      http://www.math.keio.ac.jp/~takai/

    • Related Report
      2013 Final Research Report
  • [Remarks] 研究代表者(高井勇輝)のホームページ

    • URL

      http://www.math.keio.ac.jp/~takai/

    • Related Report
      2013 Annual Research Report

URL: 

Published: 2011-08-05   Modified: 2019-07-29  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi