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Fundamentals of rooted tree maps and study on multiple zeta values

Research Project

Project/Area Number 19K03434
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 11010:Algebra-related
Research InstitutionKyoto Sangyo University

Principal Investigator

Tanaka Tatsushi  京都産業大学, 理学部, 教授 (60515196)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords根付き木写像 / 多重ゼータ値 / 多重L値 / Hopf代数 / 調和積代数 / 補間多重L値 / 調和積 / 根付き木Hopf代数 / 一般導分作用素 / t-多重L値 / Connes-KreimerのHopf代数
Outline of Research at the Start

根付き木のなすConnes-KreimerのHopf代数の二変数非可換多項式環へのある作用を発見し、根付き木写像と呼んでいる。根付き木写像が多重ゼータ値の間の広い関係式族を誘導することを証明済みであるが、本現象の根本原理を解明できていない。そこで、本研究では根付き木写像の代数的な基礎理論を整備する。さらに、根付き木写像の代数的拡張や数理物理的な応用も探究する。

Outline of Final Research Achievements

Based on Connes-Kreimer Hopf algebra of rooted trees, rooted tree maps was defined around 2018. They are closely related with multiple zeta values. This research makes some of their fundamentals clear. In particular, we got results on interpretation of rooted tree maps by means of harmonic algebra, explicit representation of antipode maps, and generalization of rooted tree maps applicable to multiple L-values.

Academic Significance and Societal Importance of the Research Achievements

根付き木写像は, 多重ゼータ値の代数的理論に新たな切り口を与えた. perturbative QFTやFeynman物理学と多重ゼータ値論との関連を示唆する現象の一つとしても, 根付き木写像は学術的に興味深い. その純代数的な性質や拡張の可能性に関する本成果は十分に意義がある.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (7 results)

All 2022 2020 2019 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (3 results) Remarks (1 results)

  • [Journal Article] Algebraic aspects of rooted tree maps2022

    • Author(s)
      Murahara Hideki、Tanaka Tatsushi
    • Journal Title

      The Ramanujan Journal

      Volume: 60 Issue: 1 Pages: 123-139

    • DOI

      10.1007/s11139-022-00612-1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rooted tree maps for multiple L-values2022

    • Author(s)
      Tanaka Tatsushi、Wakabayashi Noriko
    • Journal Title

      Journal of Number Theory

      Volume: - Pages: 471-489

    • DOI

      10.1016/j.jnt.2022.02.004

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] ROOTED TREE MAPS AND THE KAWASHIMA RELATIONS FOR MULTIPLE ZETA VALUES2020

    • Author(s)
      Henrik Bachmann, Tatsushi Tanaka
    • Journal Title

      Kyushu Journal of Mathematics

      Volume: 74 Issue: 1 Pages: 169-176

    • DOI

      10.2206/kyushujm.74.169

    • NAID

      130007873236

    • ISSN
      1340-6116, 1883-2032
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] On interpolated multiple L-values2022

    • Author(s)
      田中立志
    • Organizer
      解析的整数論とその周辺
    • Related Report
      2022 Annual Research Report
  • [Presentation] 根付き木写像と多重ゼータ値, 多重L値2020

    • Author(s)
      田中立志
    • Organizer
      第13回多重ゼータ研究集会&第48回関西多重ゼータ研究会(共同開催)
    • Related Report
      2019 Research-status Report
  • [Presentation] 根付き木写像と多重ゼータ値, 多重L値2019

    • Author(s)
      田中立志
    • Organizer
      解析的整数論とその周辺
    • Related Report
      2019 Research-status Report
  • [Remarks] Tatsushi Tanaka's home page

    • URL

      https://www.cc.kyoto-su.ac.jp/~tatsushi/

    • Related Report
      2022 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

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