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Research on analytic functions of several complex variables appearing in number theory

Research Project

Project/Area Number 18K03218
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 11010:Algebra-related
Research InstitutionTokyo Metropolitan University

Principal Investigator

Tsumura Hirofumi  東京都立大学, 理学研究科, 教授 (20310419)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords整数論 / ゼータ関数 / 代数学
Outline of Final Research Achievements

In this study, we aim to consider the properties of zeta functions which play important roles in the research of Number Theory. In particular, based on the study of E. Witten who is the famous researcher of Mathematical physics, we studied Witten's zeta function. Also we studied Arakawa-Kaneko zeta functions which include polylogarithms and gave new results, in particular new explicit expressions of the special values of these functions, which are important in this area. These results have been recently studied by a lot of researchers. Further development of this research can be expected in the near future.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は, これまでの研究で得られていた結果を一般的に扱っているという点で重要なものであると考えられる. これまで個別に研究されていたEuler-Zagier型, Mordell-Tornheim型, Apostol-Vu型などと呼ばれる多重級数型のゼータ関数が, 様々な研究者によって個別に研究されてきたが, 多変数Wittenゼータ関数という広いクラスの研究を行うことで, 既知の結果の統一的な考察, さらには今後の研究すべき方向性が統一的に見通せるという意味で, 非常に重要な視点を与えていると考えられる.

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (16 results)

All 2022 2021 2020 2019 2018 Other

All Journal Article (9 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 9 results,  Open Access: 2 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 5 results) Remarks (2 results)

  • [Journal Article] Double Dirichlet series associated with arithmetic functions2021

    • Author(s)
      Kohji Matsumoto, Akihiko Nawashiro and Hirofumi Tsumura
    • Journal Title

      Kodai Mathematical Journal

      Volume: 44 Issue: 3 Pages: 437-456

    • DOI

      10.2996/kmj/kmj44303

    • NAID

      130008114205

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Zeta-functions of root systems and Poincare polynomials of Weyl groups2020

    • Author(s)
      Komori Yasushi、Matsumoto Kohji、Tsumura Hirofumi
    • Journal Title

      Tohoku Mathematical Journal

      Volume: 72 Issue: 1 Pages: 87-126

    • DOI

      10.2748/tmj/1585101623

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] On Polycosecant Numbers2020

    • Author(s)
      Masanobu Kaneko, Maneka Pallewatta and Hirofumi Tsumura
    • Journal Title

      Journal of Integer Sequences

      Volume: 23 Pages: 1-17

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] An overview and supplements to the theory of functional relations for zeta-functions of root systems2020

    • Author(s)
      Komori Yasushi、Matsumoto Kohji、Tsumura Hirofumi
    • Journal Title

      Advanced Studies in Pure Mathematics

      Volume: 84 Pages: 263-295

    • DOI

      10.2969/aspm/08410263

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Zeta functions connecting multiple zeta values and poly-Bernoulli numbers2020

    • Author(s)
      Masanobu Kaneko and Hirofumi Tsumura
    • Journal Title

      Advanced Studies in Pure Mathematics

      Volume: 84 Pages: 181-204

    • DOI

      10.2969/aspm/08410181

    • NAID

      120007189986

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] On multiple zeta values of level two2020

    • Author(s)
      Masanobu Kaneko and Hirofumi Tsumura
    • Journal Title

      Tsukuba Journal of Mathematics

      Volume: 44 Pages: 213-234

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Zeta-functions of root systems and Poincar\'e polynomials of Weyl groups2019

    • Author(s)
      Y. Komori, K. Matsumoto and H. Tsumura
    • Journal Title

      Tohoku Mathematical Journal

      Volume: 印刷中

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] An overview and supplements to the theory of functional relations for zeta-functions of root systems2019

    • Author(s)
      Y. Komori, K. Matsumoto and H. Tsumura
    • Journal Title

      Advanced Studies in Pure Mathematics

      Volume: 印刷中

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Zeta functions connecting multiple zeta values and poly-Bernoulli numbers2019

    • Author(s)
      M. Kaneko and H. Tsumura
    • Journal Title

      Advanced Studies in Pure Mathematics

      Volume: 印刷中

    • NAID

      120007189986

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Another type of poly-Euler numbers and related zeta functions2022

    • Author(s)
      Hirofumi Tsumura
    • Organizer
      第15回ゼータ若手研究集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Variants of the Arakawa-Kaneko zeta function2021

    • Author(s)
      Hirofumi Tsumura
    • Organizer
      第15回多重ゼータ研究集会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Variants of poly-Bernoulli numbers2021

    • Author(s)
      Hirofumi Tsumura
    • Organizer
      第3回 青葉山ゼータ研究集会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Poly-Bernoulli numbers of level 2 and related zeta functions2018

    • Author(s)
      H. Tsumura
    • Organizer
      RIMS symposium `Analytic Number Theory and Related Topics'
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 数論的関数に付随する多重ディリクレ級数について2018

    • Author(s)
      津村博文
    • Organizer
      2018大分鹿児島整数論研究集会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Remarks] 東京都立大学 教員紹介

    • URL

      https://www.tmu.ac.jp/stafflist/data/ta/635.html

    • Related Report
      2020 Research-status Report
  • [Remarks] 首都大学東京 教員紹介

    • URL

      https://www.tmu.ac.jp/stafflist/data/ta/635.html

    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

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