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Automorphic representations and special values of L-functions

Research Project

Project/Area Number 26800021
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Algebra
Research InstitutionKobe University (2016-2017)
Kyoto University (2014-2015)

Principal Investigator

Morimoto Kazuki  神戸大学, 理学研究科, 講師 (20725254)

Project Period (FY) 2014-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords保型表現 / L函数 / 保型形式の周期 / 数論 / 代数学 / 保型L函数 / p進簡約群の表現
Outline of Final Research Achievements

We studied a relationship between special values of automorphic L-functions and periods of automorphic forms. Under certain assumptions, we proved an explicit formula of Whittaker periods for even unitary group, which is a conjecture by Lapid and Mao. Using a certain local identity which played an important role in the proof of this explicit formula, we proved formal degree conjecture in this case.
Further, in a joint work with Masaaki Furusawa (Osaka City University), we proved an explicit formula relating special Bessel periods and central values of automorphic L-functions associated to Siegel modular forms.

Report

(5 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (20 results)

All 2018 2017 2016 2015 2014

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Acknowledgement Compliant: 2 results) Presentation (16 results) (of which Int'l Joint Research: 5 results,  Invited: 13 results) Funded Workshop (1 results)

  • [Journal Article] Model transition for representations of unitary type2018

    • Author(s)
      Kazuki Morimoto
    • Journal Title

      International Mathematics Research Notices

      Volume: 印刷中 Pages: 1112-1203

    • DOI

      10.1093/imrn/rny048

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On special Bessel periods and the Gross-Prasad conjecture for SO(2n+1)xSO(2)2017

    • Author(s)
      Masaaki Furusawa and Kazuki Morimoto
    • Journal Title

      Mathematische Annalen

      Volume: 印刷中 Issue: 1-2 Pages: 561-586

    • DOI

      10.1007/s00208-016-1440-z

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] On the irreducibility of global descents for even unitary groups and its applications2016

    • Author(s)
      K. Morimoto
    • Journal Title

      Trans. Amer. Math. Soc.

      Volume: 印刷中 Issue: 9 Pages: 6245-6295

    • DOI

      10.1090/tran/7119

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] U(2n) の Whittaker 周期の明示公式について2018

    • Author(s)
      森本和輝
    • Organizer
      九州代数的整数論2018
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] On a certain local identity for Lapid-Mao's conjecture in the even unitary group case2017

    • Author(s)
      森本和輝
    • Organizer
      神戸整数論集会2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 次数 2 の Siegel モジュラー形式の L 函数の中心値の明示公式について2017

    • Author(s)
      森本和輝
    • Organizer
      東京電機大学数学講演会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] On a certain local identity for an explicit formula of Whittaker periods on the even unitary group2017

    • Author(s)
      森本和輝
    • Organizer
      Workshop ``Special values of automorphic L-functions, periods of automorphic forms and related topics''
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] On special Bessel periods and the Gross-Prasad conjecture for SO(2n+1) x SO(2)2016

    • Author(s)
      K .Morimoto
    • Organizer
      Workshop on Shimura varieties, representation theory and related topics
    • Place of Presentation
      京都大学
    • Year and Date
      2016-11-21
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] On special Bessel periods and the Gross-Prasad conjecture for SO(2n+1)x SO(2)2016

    • Author(s)
      森本和輝
    • Organizer
      New Developments in Representation Theory
    • Place of Presentation
      Institute for Mathematical Sciences(シンガポール)
    • Year and Date
      2016-03-08
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] On the irreducibility of global descents for even unitary groups and its applications2016

    • Author(s)
      森本和輝
    • Organizer
      南大阪保型表現論セミナー
    • Place of Presentation
      大阪市立大学(大阪府 大阪市)
    • Year and Date
      2016-02-12
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] 次数2のSiegelモジュラー形式のSpecial Bessel周期とL函数の中心値について2016

    • Author(s)
      森本和輝
    • Organizer
      早稲田大学整数論セミナー
    • Place of Presentation
      早稲田大学
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] (SO(2n+1), SO(2))の場合のGross-Prasad予想とSpecial Bessel 周期について2016

    • Author(s)
      森本和輝
    • Organizer
      東北大学代数セミナー
    • Place of Presentation
      東北大学
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] ユニタリ型表現のモデルの変換公式について2015

    • Author(s)
      森本和輝
    • Organizer
      代数学シンポジウム
    • Place of Presentation
      静岡大学(静岡県 静岡市)
    • Year and Date
      2015-09-02
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] On special values of tensor product L-functions for SO(V) and GL(2)2015

    • Author(s)
      森本和輝
    • Organizer
      Automorphic Seminar
    • Place of Presentation
      Ben-Gurion University(イスラエル)
    • Year and Date
      2015-06-28
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Model transition for representations of unitary type2015

    • Author(s)
      森本和輝
    • Organizer
      2015 Annual meeting of the Israel Mathematical Union
    • Place of Presentation
      Herods Dead Sea Hotel(イスラエル)
    • Year and Date
      2015-05-31
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] 四元数ユニタリ群とGL(2)のテンソル積L函数の特殊値の代数性について2014

    • Author(s)
      森本和輝
    • Organizer
      大阪大学数論 保型形式セミナー
    • Place of Presentation
      大阪大学
    • Year and Date
      2014-10-17
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] SO(V)×GL(2)のL函数の特殊値について2014

    • Author(s)
      森本和輝
    • Organizer
      金沢数論ミニ集会
    • Place of Presentation
      金沢大学
    • Year and Date
      2014-10-14
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] On special values of L-functions for quaternion unitary groups of degree 2 and GL(2)2014

    • Author(s)
      森本和輝
    • Organizer
      Oberwolfach Workshop``Modular Forms”
    • Place of Presentation
      Mathematisches Forschungsinstitut Oberwolfach(ドイツ)
    • Year and Date
      2014-05-01
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] 次数2のSiegelモジュラー形式と楕円モジュラー形式のテンソル積L函数の特殊値について2014

    • Author(s)
      森本和輝
    • Organizer
      数論合同セミナー
    • Place of Presentation
      京都大学
    • Year and Date
      2014-04-11
    • Related Report
      2014 Research-status Report
  • [Funded Workshop] Workshop ``Special values of automorphic L-functions, periods of automorphic forms and related topics''2017

    • Related Report
      2017 Annual Research Report

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Published: 2014-04-04   Modified: 2019-03-29  

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