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Development of representation of group by infinite dimensional algebras

Research Project

Project/Area Number 18K18708
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 11:Algebra, geometry, and related fields
Research InstitutionUniversity of Tsukuba

Principal Investigator

MIYAMOTO Masahiko  筑波大学, 数理物質系(名誉教授), 名誉教授 (30125356)

Co-Investigator(Kenkyū-buntansha) 千吉良 直紀  熊本大学, 大学院先端科学研究部(理), 教授 (40292073)
Project Period (FY) 2018-06-29 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords無限次元代数 / 表現論 / 有限群 / 正則頂点作用素代数 / 自己同型群 / コンウエイ群 / リーチ格子 / 深洞 / 頂点作用素代数 / ウエイト1空間 / 一般ディープホール / リー代数 / 軌道理論 / ムーンシャイン現象 / ツー代数 / 軌道ディープホール / C2有限性 / 加群 / 有限単純群 / モンスター単純群 / モジュラー形式
Outline of Final Research Achievements

A vertex operator algebra gives a 2-dimensional conformal field theory in physics rigorous mathematical axioms. It is an infinite-dimensional algebra with infinitely many bilinear products. Classifying holomorphic vertex operator algebras with central charge 24 is one of the most essential classical problems and P.I has been attacking this problem for 30 years. In this project, imitating a beautiful method in the classification of unimodular positive definite even lattices of rank 24, we succeeded in giving a natural unified proof for the classification of holomorphic vertex operator algebras with central charge 24 except for the moonshine type by using representations of inner structures of vertex operator algebras corresponding to automorphisms and
explain Heon's observation. Namely, we realized group representations by using an inner structure of infinite dimensional algebras. This method is far from the classical way of group representation theory.

Academic Significance and Societal Importance of the Research Achievements

頂点作用素代数は物理における2次元共系場理論に数学的公理を与えたものであり、代数だけではなく、表現論、数論、幾何、数理物理とつながっており、その研究は数学だけでなく、広い意味で学術的意義が大きい。特に、本研究で扱った正則頂点作用素代数の分類問題は、重要な場の理論の分類であり、その価値は高い。また、この研究は当初、日本やアメリカでの研究が進んでいたが、最近はドイツのグループが統一的な証明を与えるなど、国際グループ間での競争の形を呈していた。その中で今回、日本のグループが最終的に非常に自然な形で統一的分類問題を解決できたことは、学術的意義だけではなく、社会的意義を大いにあると判断できる。

Report

(7 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (21 results)

All 2023 2022 2021 2020 2019 2018

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 1 results) Presentation (15 results) (of which Int'l Joint Research: 7 results,  Invited: 10 results)

  • [Journal Article] A lattice theoretical interpretation of generalized deep holes of the Leech lattice vertex operator algebra2023

    • Author(s)
      Ching Hung Lam, Masahiko Miyamoto
    • Journal Title

      Forum Math. Sigma

      Volume: 11-e86 Pages: 1-36

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Orbifold construction and Lorentzian construction of Leech lattice vertex operator algebra2022

    • Author(s)
      Naoki Chigira, Ching Hung Lam, Masahiko Miyamoto
    • Journal Title

      Journal of Algebra

      Volume: 593 Pages: 26-71

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Vertex operator algebras and modular invariance2020

    • Author(s)
      Masahiko Miyamoto
    • Journal Title

      Contemporary Mathematics

      Volume: 753 Pages: 233-250

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Vertex Operator Algebras and Modular Invariance2020

    • Author(s)
      Masahiko Miyamoto
    • Journal Title

      the Proceedings of the Conference on Vertex Operator Algebras, Number Theory and Related Topics

      Volume: TBD

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] A remark on Zhu’s C_m-algebra of the fusion products2020

    • Author(s)
      Masahiko Miyamoto
    • Journal Title

      Proceedings of the CFT-seminar in Kyoto 2018

      Volume: TBD

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Vertex Operator Algebras and Modular Invariance (印刷中)2019

    • Author(s)
      Masahiko Miyamoto
    • Journal Title

      Proceedings of the Conference on Vertex Operator Algebras, Number Theory and Related Topics

      Volume: -

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Rationality of holomorphic vertex operator algebras2023

    • Author(s)
      Masahiko Miyamoto
    • Organizer
      Vertex algebras, infinite dimensional Lie algebras and related topics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] p-群に対する原田予想II2023

    • Author(s)
      宮本雅彦
    • Organizer
      有限群論,代数的組合せ論,頂点代数の研究
    • Related Report
      2023 Annual Research Report
  • [Presentation] Borcherdsのリー代数とムーンシャイン型VOAのC2-余有限性2023

    • Author(s)
      宮本雅彦
    • Organizer
      日本数学会秋季学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 正則頂点作用素代数の有理性2023

    • Author(s)
      宮本雅彦
    • Organizer
      日本数学会秋季学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Borcherds's Lie algebra and C2-cofiniteness of moonshine VOAs2023

    • Author(s)
      Masahiko Miyamoto
    • Organizer
      Representation Theory XVIII
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Associativity of fusion products of C1-cofinite N-gradable VOA modules2022

    • Author(s)
      Masahiko Miyamoto
    • Organizer
      Conference in Finite Groups and Vertex Algebra
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Leech lattice and holomorphic VOA2022

    • Author(s)
      宮本雅彦
    • Organizer
      数理解析研究所研究集会「有限群論,代数的組合せ論,頂点代数の研究」
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Associatiivity of fusion proudcts of C1-cofinite N-gradable VOA modules2021

    • Author(s)
      Masahiko Miyamoto
    • Organizer
      Komaba special on-line seminar
    • Related Report
      2021 Research-status Report
  • [Presentation] VOAのC1-cofinite N-gradable modules のフュージョン積の結合性について2021

    • Author(s)
      宮本雅彦
    • Organizer
      代数シンポジウム
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] On C2-cofiniteness of commutant subVOA2019

    • Author(s)
      Mashiko Miyamoto
    • Organizer
      Representation theory XVI
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Deep holes of Leech lattice VOA2019

    • Author(s)
      Masahiko Miyamoto
    • Organizer
      Research on algebraic combinatorics, related groups and algebras
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] C2-cofiniteness of orbifold model2019

    • Author(s)
      Masahiko Miyamoto
    • Organizer
      Xiamen Workshop on Lie Theory and Related Topics
    • Related Report
      2019 Research-status Report 2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 頂点超代数とChiral de Rham complex の紹介2019

    • Author(s)
      宮本雅彦
    • Organizer
      第31回有限群論草津セミナー
    • Related Report
      2019 Research-status Report
  • [Presentation] A combinatorial world using a super vertex operator algebra2019

    • Author(s)
      Masahiko Miyamoto
    • Organizer
      Taipei International Workshop on Combinatorics and Graph Theory
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] From Mathieu to Conway2018

    • Author(s)
      Mashiko Miyamoto
    • Organizer
      Vertex Operator Algebras and Related Topics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2018-07-25   Modified: 2025-01-30  

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