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Skein algebra and its applications

Research Project

Project/Area Number 22K20342
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0201:Algebra, geometry, analysis, applied mathematics,and related fields
Research InstitutionGakushuin University

Principal Investigator

Karuo Hiroaki  学習院大学, 理学部, 助教 (80963363)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsスケイン代数 / 指標多様体 / 量子団代数 / 量子タイヒミュラー空間
Outline of Research at the Start

本研究は, スケイン代数を用いて低次元トポロジーおよび他分野への応用を見込むものである. 具体的には, 指標多様体・量子団代数への応用を念頭に置いている.
前者に関しては, 指標多様体のAzumaya集合とシンプレクティック葉の関係性を非半単純位相的場の理論由来のスケイン代数の表現を用いて明確にする.
後者に関しては, Fock--Goncharovの与えた双対写像の量子化をMullerスケイン代数を用いて与え, 曲面の無限族に対して正値性予想の肯定的解決を目指す.

Outline of Final Research Achievements

With J. Korinman, we gave the Azumaya loci of skein algebras explicitly. As an application, we had a simpler interpretation of projective representations coming from non-semi simple TQFT. In another project, we classified finite dimensional representations of reduced stated skein algebras using a decomposition formula of Azumaya loci.
With T. Ishibashi, we gave a skein interpretation of the positivity conjecture of structure constants for quantum duality maps and showed the conjecture with explicit structure constants.

Academic Significance and Societal Importance of the Research Achievements

Korinman氏との共同研究(1)はLe--Yuのサーベイにおける予想の反証になっており, インパクトがある. 特に, 非半単純位相的場の理論由来のスケイン代数の表現や量子6j記号を用いており, 先行研究のアイデアや手法とは非常に異なっている. (2)では, 量子団代数のAzumaya集合に関する結果の適用が証明の根幹になっており, 低次元トポロジーに収まらない研究として意義がある.
石橋典氏との共同研究について, 構造定数の正値性予想のスケイン代数的な解釈の恩恵として, 比較的簡単な曲面に対しては, スケイン代数の範疇で図式的かつ具体的に構造定数が理解できるというのが本研究の有用性である.

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (16 results)

All 2024 2023 2022

All Presentation (16 results) (of which Int'l Joint Research: 7 results,  Invited: 16 results)

  • [Presentation] 境界付き3次元多様体のスケイン加群の有限性予想2024

    • Author(s)
      軽尾 浩晃
    • Organizer
      佐賀創発数理セミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] On positivity of Roger--Yang skein algebras2024

    • Author(s)
      Hiroaki Karuo
    • Organizer
      East Asian Conference on Geometric Topology
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On positivity of Roger--Yang skein algebras2023

    • Author(s)
      Hiroaki Karuo
    • Organizer
      Skein theory in Singapore
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Classification of representations of skein algebras using quantum cluster algebras2023

    • Author(s)
      軽尾 浩晃
    • Organizer
      Tohoku Cluster Seminar
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] スケイン代数の表現とAzumaya集合2023

    • Author(s)
      軽尾 浩晃
    • Organizer
      リーマン面に関連する位相幾何学
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Azumaya loci and skein algebras2023

    • Author(s)
      Hiroaki Karuo
    • Organizer
      Workshop on Quantum invariants and low-dimensional topology
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Roger--Yangスケイン代数の正値性予想の提案2023

    • Author(s)
      軽尾 浩晃
    • Organizer
      農工大・早大理工セミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Quantum duality maps, skein algebras and their ensemble compatibility2023

    • Author(s)
      軽尾 浩晃
    • Organizer
      南大阪代数セミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Skein algebras and quantum Teichmuller spaces2023

    • Author(s)
      Hiroaki Karuo
    • Organizer
      The 14th MSJ-SI: New Aspects of Teichmuller theory
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Quantum duality maps and skein algebras2023

    • Author(s)
      Hiroaki Karuo
    • Organizer
      Skein Algebra and related topics School and Workshop
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] スケイン代数とその周辺2023

    • Author(s)
      軽尾 浩晃
    • Organizer
      N-KOOKセミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] スケイン代数と正値性予想2023

    • Author(s)
      軽尾 浩晃
    • Organizer
      佐賀大学・学習院大学合同トポロジーセミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] The reduced Dijkgraaf--Witten invariant of knots in the Bloch group of a finite field2023

    • Author(s)
      Hiroaki Karuo
    • Organizer
      Gauge Fields in Arithmetic, Topology & Physics
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] スケイン代数とその周辺2022

    • Author(s)
      軽尾 浩晃
    • Organizer
      学習院大学・数学科談話会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] LRY skein algebras and Chekhov--Fock algebras2022

    • Author(s)
      Hiroaki Karuo
    • Organizer
      Topology and Geometry of Low-dimensional Manifolds
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Quantum trace maps for LRY skein algebras2022

    • Author(s)
      Hiroaki Karuo
    • Organizer
      Friday Seminar on Knot Theory
    • Related Report
      2022 Research-status Report
    • Invited

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Published: 2022-09-01   Modified: 2025-01-30  

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