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数論トポロジーと種々のモノドロミー不変量の新たな展開

Research Project

Project/Area Number 20H00115
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 11:Algebra, geometry, and related fields
Research InstitutionOsaka University

Principal Investigator

中村 博昭  大阪大学, 大学院理学研究科, 教授 (60217883)

Co-Investigator(Kenkyū-buntansha) 角皆 宏  上智大学, 理工学部, 教授 (20267412)
河澄 響矢  東京大学, 大学院数理科学研究科, 教授 (30214646)
森下 昌紀  九州大学, 数理学研究院, 教授 (40242515)
星 明考  新潟大学, 自然科学系, 教授 (50434262)
伊吹山 知義  大阪大学, その他部局等, 名誉教授 (60011722)
古庄 英和  名古屋大学, 多元数理科学研究科, 教授 (60377976)
高橋 浩樹  徳島大学, 大学院社会産業理工学研究部(理工学域), 教授 (90291476)
小笠原 健  獨協医科大学, 医学部, 講師 (90709776)
Project Period (FY) 2020-04-01 – 2025-03-31
Project Status Granted (Fiscal Year 2024)
Budget Amount *help
¥44,590,000 (Direct Cost: ¥34,300,000、Indirect Cost: ¥10,290,000)
Fiscal Year 2024: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2023: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2022: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2021: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Fiscal Year 2020: ¥10,920,000 (Direct Cost: ¥8,400,000、Indirect Cost: ¥2,520,000)
Keywords数論トポロジー / 数論的基本群 / ジョンソン準同形
Outline of Research at the Start

本研究では,ガロア・タイヒミュラー群の普遍モノドロミー表現,正則逆ガロア問題に関わるリフトと特殊化,モノドロミー不変量としての種々の数論的関数の醸成,の三つの柱に集約される新しい観点からの方法を導入し,数論トポロジーに対する有機的な構造解析を進める.理論的考察とともに計算機による実例計算とを総合して数論側とトポロジー側との類似性比較に関する詳細な理解を追求するとともに,両者を繋ぐバイパス構築の手がかりに関わる数学的構造の理解の深化を目指す.

Outline of Annual Research Achievements

昨年度に引き続き,研究室の大学院生 R.S.TarmidiとのトロピカルEdwards曲線の2パラメータ族について研究を進め,トロピカル平滑性が成り立つ条件を明示的に与えた.この共同研究をH.Nakamura, R.S.Tarmidi"On a two-parameter family of tropical Edwards curves" としてまとめて投稿し,Kyushu Journal of Mathematicsから掲載決定の報せを受け取った.分担者の河澄響矢を含む国際共同企画の一環として Workshop "Mapping class groups: pronilpotent and cohomological approaches"をSwissMAP Research Station in Les Diableretsにおいて,2023年9月17--22日の期間に実施し,ジョンソン準同型のほか関係する数論とトポロジーの関係する最新理論について研究交流を促進した.とくに分担者の古庄英和は"Associators in mould theory"というタイトルで講演を行い,最新の研究成果について報告をした.また分担者の森下昌紀と協力して,九州大学において国際研究集会"Low dimensional topology and number theory XV"を年度末の2024年3月5~8日に実施し,最新の成果について情報交換を行った.
研究代表者が共著者の一人である論文(Eiko KIN, Hiroaki NAKAMURA, Hiroyuki OGAWA: Lissajous 3-braids, Journal of the Mathematical Society of Japan, Vol. 75 No. 1 (2023), pp. 195--228)および分担者の伊吹山知義が共著者の一人である論文(Hiraku ATOBE, Masataka CHIDA, Tomoyoshi IBUKIYAMA, Hidenori KATSURADA, Takuya YAMAUCHI: Harder's conjecture I, Journal of the Mathematical Society of Japan, Vol. 75, No. 4 (2023), pp. 1339--1408)が,2024年の3月に大阪公立大学にて開催された日本数学会の年会において,JMSJ論文賞を受賞した.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

コロナ感染状況の終息期になり,対面によるディスカッションが少しずつ可能になったことより,当初から想定していた研究活動が行えるようになった.

Strategy for Future Research Activity

引き続き,分担者や研究協力者の方たちを中心とした協力関係を進め,研究課題を追求する.

Report

(5 results)
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Comments on the Screening Results   Annual Research Report
  • Research Products

    (23 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (11 results) (of which Int'l Joint Research: 10 results,  Invited: 10 results) Funded Workshop (4 results)

  • [Int'l Joint Research] SwissMAP Research Station(スイス)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Harder's conjecture I2023

    • Author(s)
      ATOBE Hiraku、CHIDA Masataka、IBUKIYAMA Tomoyoshi、KATSURADA Hidenori、YAMAUCHI Takuya
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: 75 Issue: 4 Pages: 1339-1408

    • DOI

      10.2969/jmsj/87988798

    • ISSN
      0025-5645, 1881-1167, 1881-2333
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Demi-shuffle duals of Magnus polynomials in a free associative algebra2023

    • Author(s)
      Nakamura Hiroaki
    • Journal Title

      Algebraic Combinatorics

      Volume: 6 Issue: 4 Pages: 929-939

    • DOI

      10.5802/alco.287

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Lissajous 3-braids2023

    • Author(s)
      E.Kin, H.Nakamura, H.Ogawa
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: 75 Issue: 1 Pages: 195-228

    • DOI

      10.2969/jmsj/86658665

    • ISSN
      0025-5645, 1881-1167, 1881-2333
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On adelic Hurwitz zeta measures2020

    • Author(s)
      H.Nakamura, Z.Wojtkowiak
    • Journal Title

      Journal of the London Mathematical Society

      Volume: 101 Issue: 3 Pages: 938-959

    • DOI

      10.1112/jlms.12292

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On distribution formula for complex and l-adic polylogarithms2020

    • Author(s)
      H.Nakamura, Z.Wojtkowiak
    • Journal Title

      Springer Proceedings in Mathematics & Statistics

      Volume: 314 Pages: 593-619

    • DOI

      10.1007/978-3-030-37031-2_21

    • ISBN
      9783030370305, 9783030370312
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A family of geometric operators on triangles with two complex variables2020

    • Author(s)
      H.Nakamura, H.Ogawa
    • Journal Title

      Journal of Geometry

      Volume: 111 Issue: 1

    • DOI

      10.1007/s00022-019-0514-y

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On generalized median triangles and tracing orbits2020

    • Author(s)
      H.Nakamura, H.Ogawa
    • Journal Title

      Results in Math

      Volume: 75 Issue: 4

    • DOI

      10.1007/s00025-020-01268-3

    • Related Report
      2020 Annual Research Report
  • [Presentation] Through the looking-π_1 after Belyi, Grothendieck, Ihara2024

    • Author(s)
      H.Nakamura
    • Organizer
      GROTHENDIECK TEICHMUELLER THEORY, ICTS Bengaluru,India
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A mild overview on Grothendieck's conjecture on anabelian algebraic geometry2024

    • Author(s)
      H.Nakamura
    • Organizer
      GROTHENDIECK TEICHMUELLER THEORY, ICTS Bengaluru,India
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Associators in mould thoery2023

    • Author(s)
      H.Furusho
    • Organizer
      Mapping class groups: pronilpotent and cohomological approaches, SwissMAP Research Station in Les Diablerets
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Lifting 2 by 2 matrices to 3-braids, revisited2023

    • Author(s)
      H.Nakamura
    • Organizer
      LILLE AHGT DAY, Lille University - Laboratoire Paul Painleve
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Demi-shuffle duals of Magnus polynomials in a free associative algebra2023

    • Author(s)
      H.Nakamura
    • Organizer
      Combinatorics and Arithmetic for Physics (Jubilee, Tenth Anniversary Edition) IHES, Bures-sur-Yvette France
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A toy model of tropical ultradiscretizations of an elliptic curve,2023

    • Author(s)
      H. Nakamura
    • Organizer
      Arithmetic Seminar Day in Toyonaka 2023 March, Osaka University
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A two-parameter family of tropical ultra-discretizations of an elliptic curve2023

    • Author(s)
      H. Nakamura
    • Organizer
      Workshop Arithmetic & Homotopic Galois Theory 2023
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 重さ1のmod p モジュラー形式の計算と,1つの素数でのみ分岐するPGL(2,7)拡大の探索2022

    • Author(s)
      小笠原 健
    • Organizer
      大阪大学整数論保型形式セミナー
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Some aspects of arithmetic functions in Grothendieck-Teichmuller theory2021

    • Author(s)
      H.Nakamura
    • Organizer
      Workshop "Homotopic and Geometric Galois Theory", (online) Oberwolfach
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On arithmetic and geometry around the adelic Eisenstein function2021

    • Author(s)
      H.Nakamura
    • Organizer
      RIMS workshop "Foundations and Perspectives of Anabelian Geometry
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] リサジュ―曲線3体運動の組ひも型について2021

    • Author(s)
      金英子,中村博昭,小川裕之
    • Organizer
      2021年度研究集会「リーマン面に関連する位相幾何学」(online)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Funded Workshop] Low dimensional topology and number theory XV2024

    • Related Report
      2023 Annual Research Report
  • [Funded Workshop] Mapping class groups: pronilpotent and cohomological approaches2023

    • Related Report
      2023 Annual Research Report
  • [Funded Workshop] Workshop "Low dimensional topology and number theory XIV2023

    • Related Report
      2021 Annual Research Report
  • [Funded Workshop] The 14th MSJ-SI: New Aspects of Teichmueller theory2022

    • Related Report
      2021 Annual Research Report

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Published: 2020-04-28   Modified: 2024-12-25  

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