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On the relation between L-functions and periods, and the related problems in number theory

Research Project

Project/Area Number 23740034
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Algebra
Research InstitutionTokyo University of Science

Principal Investigator

KASHIO Tomokazu  東京理科大学, 理工学部, 講師 (10403106)

Project Period (FY) 2011-04-28 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
KeywordsL関数 / 周期 / p進L関数 / p進周期 / スターク予想 / グロス予想 / ガンマ関数 / p進ガンマ関数 / L関数 / p進L関数
Outline of Final Research Achievements

The Artin L-functions are meromorphic functions associated with Galois representations of number fields. Stark's conjecture states an explicit formula for the leading terms of the Taylor expansions of the Artin L-functions.
The purpose of my research is to study Stark's conjecture by a new method. That is, by using Stark units, CM-periods, the multiple gamma function, and their p-adic analogues simultaneously, we tried to solve this problem. Each of them, or, the relation between two of them has been studied well so far. Recently, we provided an alternative proof of Stark's conjecture when the base field is the rational number field. Moreover we obtained some partial results concerning its generalization and submitted some papers.

Report

(5 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (20 results)

All 2015 2014 2013 2012 2011

All Journal Article (9 results) (of which Peer Reviewed: 3 results) Presentation (11 results) (of which Invited: 2 results)

  • [Journal Article] A survey on Stark's conjectures and a result of Dasgupta-Darmon-Pollack2015

    • Author(s)
      Tomokazu Kashio
    • Journal Title

      RIMS Kokyuroku Bessatsu

      Volume: 未定

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A survey on Stark's conjectures and a result of Dasgupta-Darmon-Pollack2014

    • Author(s)
      Tomokazu Kashio
    • Journal Title

      RIMS Kokyuroku Bessatsu Algebraic Number Theory and Related Topics 2012

      Volume: 未定

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Stark-Tateの定式化2013

    • Author(s)
      加塩朋和
    • Journal Title

      第20回整数論サマースクール「Stark予想」報告集

      Volume: 1 Pages: 1-14

    • Related Report
      2013 Research-status Report
  • [Journal Article] 有理数体上のStark予想の証明2013

    • Author(s)
      加塩朋和
    • Journal Title

      第20回整数論サマースクール「Stark予想」報告集

      Volume: 1 Pages: 15-26

    • Related Report
      2013 Research-status Report
  • [Journal Article] Rubin’s integral refinement2013

    • Author(s)
      加塩朋和
    • Journal Title

      第20回整数論サマースクール「Stark予想」報告集

      Volume: 1 Pages: 93-104

    • Related Report
      2013 Research-status Report
  • [Journal Article] Stark-Tateの定式化2013

    • Author(s)
      加塩朋和
    • Journal Title

      第20回整数論サマースクール「Stark予想」報告集

      Volume: 1

    • Related Report
      2012 Research-status Report
  • [Journal Article] 有理数体上のStark予想の証明2013

    • Author(s)
      加塩朋和
    • Journal Title

      第20回整数論サマースクール「Stark予想」報告集

      Volume: 1

    • Related Report
      2012 Research-status Report
  • [Journal Article] Rubin's integral refinement2013

    • Author(s)
      加塩朋和
    • Journal Title

      第20回整数論サマースクール「Stark予想」報告集

      Volume: 1

    • Related Report
      2012 Research-status Report
  • [Journal Article] p進多重ガンマ関数とp進周期の関係について2011

    • Author(s)
      加塩朋和
    • Journal Title

      RIMS Kokyuroku Bessatsu: Algebraic Number Theory and Related Topics

      Volume: B25 Pages: 31-51

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Presentation] Stark's conjecture over the rational number field and CM-periods of Fermat curves2014

    • Author(s)
      加塩朋和
    • 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
      2014-12-04
    • Related Report
      2014 Annual Research Report
  • [Presentation] A product of special values of multiple gamma functions2014

    • Author(s)
      Tomokazu Kashio
    • Organizer
      Japan-Taiwan Joint Conference on Number Theory
    • Place of Presentation
      休暇村気仙沼大島
    • Year and Date
      2014-09-04
    • Related Report
      2014 Annual Research Report
  • [Presentation] On Shimura's CM-periods and Stark's units over totally real fields2013

    • Author(s)
      Tomokazu Kashio
    • Organizer
      Automorphic Functions and Arithmetic Geometry: a symposium for Prof. L. Lafforgue's visit
    • Place of Presentation
      九州大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 有理数体上のStark予想の部分的な別証明2013

    • Author(s)
      加塩朋和
    • Organizer
      早稲田大学整数論セミナー
    • Place of Presentation
      早稲田大学
    • Related Report
      2013 Research-status Report
  • [Presentation] Frobenius actions on Fermat curves and cyclotomic units2012

    • Author(s)
      加塩朋和
    • Organizer
      Symposium on ARITHMETIC & GEOMETRY
    • Place of Presentation
      九州大学伊都キャンパス
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] Stark-Tateの定式化2012

    • Author(s)
      加塩朋和
    • Organizer
      第20回整数論サマースクール「Stark予想」
    • Place of Presentation
      国民休暇村南阿蘇
    • Related Report
      2012 Research-status Report
  • [Presentation] 有理数体上のStark予想の証明2012

    • Author(s)
      加塩朋和
    • Organizer
      第20回整数論サマースクール「Stark予想」
    • Place of Presentation
      国民休暇村南阿蘇
    • Related Report
      2012 Research-status Report
  • [Presentation] Rubin's integral refinement2012

    • Author(s)
      加塩朋和
    • Organizer
      第20回整数論サマースクール「Stark予想」
    • Place of Presentation
      国民休暇村南阿蘇
    • Related Report
      2012 Research-status Report
  • [Presentation] A survey on Stark’s conjectures and a result of Dasgupta-Darmon-Pollack2012

    • Author(s)
      加塩朋和
    • Organizer
      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
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] On a relation between p-adic gamma functions and p-adic periods2011

    • Author(s)
      加塩朋和
    • Organizer
      岩澤理論ミニ研究集会
    • Place of Presentation
      京都大学理学部
    • Related Report
      2011 Research-status Report
  • [Presentation] On a relation between p-adic gamma functions and p-adic periods2011

    • Author(s)
      加塩朋和
    • Organizer
      Workshop on L-FUNCTIONS
    • Place of Presentation
      九州大学
    • Related Report
      2011 Research-status Report

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

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