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2016 Fiscal Year Annual Research Report

Study of noncommutative Hodge structures in mirror symmetry

Research Project

Project/Area Number 26610008
Research InstitutionOsaka University

Principal Investigator

高橋 篤史  大阪大学, 理学研究科, 教授 (50314290)

Co-Investigator(Kenkyū-buntansha) 入谷 寛  京都大学, 理学研究科, 准教授 (20448400)
小西 由紀子  京都大学, 理学研究科, 准教授 (30505649)
Project Period (FY) 2014-04-01 – 2017-03-31
Keywords代数学 / 幾何学 / 数理物理学 / ミラー対称性
Outline of Annual Research Achievements

本年度は,導来圏の自己同値函手についてのエントロピーの研究,オービフォールドJacobi環の研究,に主として取り組んだ.
前者については,エントロピーがHochschildホモロジー群や数値的Grothendieck群上のスペクトル半径の自然対数に等しいであろう,という予想(Gromov-Yomdin型予想)の解決を目指して基礎研究を行った.研究協力者菊田康平・白石勇貴とともに,数値的Grothendieck群上のスペクトル半径の自然対数によりエントロピーが下から評価できること,大局次元が1以下の有限次元代数の有限次元加群のなす導来圏,およびオービフォールド射影直線上の連接層の導来圏に対して,Gromov-Yomdin型予想が成立することを示し,論文として取りまとめた.
後者については,外国人共同研究者A.Basalaev・E.Wernerとともに,オービフォールドJacobi環の定式化を行い,可逆多項式とそれを保つ有限アーベル群の組に対してその存在と一意性を証明した.また,アーノルドの14個の例外型特異点を与える可逆多項式に関して,オービフォールドJacobi環たちの間の同型とミラー対称性や奇妙な双対性との整合性についてまとめ,これも論文として取りまとめた.
研究分担者入谷寛はCoates・Corti・Tsengとの共同研究においてトーリック軌道体に対するミラー対称性の研究を進め,同変大量子コホモロジーに対するホッジ理論的ミラー対称性を一般的な設定で証明した.研究分担者小西由紀子は,計量なし齋藤構造の慨双対性と,複素鏡映群の軌道空間上の自然な計量なし齋藤構造について研究し,既約複素鏡映群について計量なし齋藤構造を完全に決定した.
研究分担者入谷・小西とともに,ミラー対称性に関する国際研究集会「Mirror Symmetry and Related Topics, Kyoto 2016」を開催し,関連分野の研究者による最新の研究成果についての講演をもとに,参加者たちと活発な研究交流を行った.

  • Research Products

    (18 results)

All 2016 Other

All Int'l Joint Research (4 results) Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results,  Acknowledgement Compliant: 1 results) Presentation (9 results) (of which Int'l Joint Research: 7 results,  Invited: 9 results) Funded Workshop (1 results)

  • [Int'l Joint Research] Universitaet Hannover/Universitaet Mannheim(Germany)

    • Country Name
      Germany
    • Counterpart Institution
      Universitaet Hannover/Universitaet Mannheim
  • [Int'l Joint Research] Higher School of Economics(ロシア連邦)

    • Country Name
      RUSSIA FEDERATION
    • Counterpart Institution
      Higher School of Economics
  • [Int'l Joint Research] Imperial College London(United Kingdom)

    • Country Name
      United Kingdom
    • Counterpart Institution
      Imperial College London
  • [Int'l Joint Research] Institute for Advanced Study(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      Institute for Advanced Study
  • [Journal Article] Strange duality between hypersurface and complete intersection singularities2016

    • Author(s)
      W. Ebeling, A. Takahashi
    • Journal Title

      Arnold Journal of Mathematics

      Volume: 2 Pages: 277 - 298

    • DOI

      10.1007/s40598-016-0044-8

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Extremal transition and quantum cohomology: Examples of toric degeneration2016

    • Author(s)
      Hiroshi Iritani, Jifu Xiao
    • Journal Title

      Kyoto J. Math.

      Volume: 56 Pages: 873 - 905

    • DOI

      10.1215/21562261-3664959

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Gamma classes and quantum cohomology of Fano manifolds: Gamma Conjectures2016

    • Author(s)
      Sergey Galkin, Vasily Golyshev, Hiroshi Iritani
    • Journal Title

      Duke Math. J.

      Volume: 165 Pages: 2005 - 2077

    • DOI

      10.1215/00127094-3476593

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] On the existence of a global neighbourhood2016

    • Author(s)
      Tom Coates, Hiroshi Iritani
    • Journal Title

      Glasgow Math. J.

      Volume: 58 Pages: 717 - 726

    • DOI

      10.1017/S0017089515000427

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] On entropy of autoequivalences of smooth projective varieties2016

    • Author(s)
      Atsushi Takahashi
    • Organizer
      Algebraic Geometry and Integrable Systems, Kobe 2016
    • Place of Presentation
      神戸大学
    • Year and Date
      2016-12-09
    • Int'l Joint Research / Invited
  • [Presentation] Orbifold Jacobian algebras for invertible polynomials2016

    • Author(s)
      Atsushi Takahashi
    • Organizer
      Categorical and analytic invariants in Algebraic geometry 4
    • Place of Presentation
      東京大学国際高等研究所数物連携宇宙研究機構
    • Year and Date
      2016-11-17
    • Int'l Joint Research / Invited
  • [Presentation] On the Gamma conjecture associated with toric flips2016

    • Author(s)
      Hiroshi Iritani
    • Organizer
      Workshop on Homological Mirror Symmetry: Methods and Structures
    • Place of Presentation
      Institute for Advanced Study (USA)
    • Year and Date
      2016-11-17
    • Int'l Joint Research / Invited
  • [Presentation] 齋藤構造の双対性と複素鏡映群への応用2016

    • Author(s)
      小西 由紀子
    • Organizer
      第4回 K3曲面・エンリケス曲面ワークショップ
    • Place of Presentation
      北海道教育大学札幌駅前サテライト
    • Year and Date
      2016-10-10
    • Invited
  • [Presentation] On entropy of autoequivalences of projective varieties2016

    • Author(s)
      Atsushi Takahashi
    • Organizer
      Categorical and analytic invariants in Algebraic geometry 3
    • Place of Presentation
      Steklov Mathematical Institute (RUSSIA)
    • Year and Date
      2016-09-17
    • Int'l Joint Research / Invited
  • [Presentation] Toric mirror symmetry via Seidel representation2016

    • Author(s)
      Hiroshi Iritani
    • Organizer
      Workshop on geometric correspondence of gauge theories
    • Place of Presentation
      ICTP Trieste (ITALY)
    • Year and Date
      2016-09-15
    • Int'l Joint Research / Invited
  • [Presentation] Landau-Ginzburg mirror symmetry for toric stacks2016

    • Author(s)
      Hiroshi Iritani
    • Organizer
      Number Theory and Quantum Field Theory "Mathematics of Quantum Field Theory"
    • Place of Presentation
      IBS Center for Geometry and Physics (KOREA)
    • Year and Date
      2016-08-25
    • Int'l Joint Research / Invited
  • [Presentation] On orbifold Jacobian algebras2016

    • Author(s)
      Atsushi Takahashi
    • Organizer
      The 7th Pacific RIM Conference on Mathematics 2016
    • Place of Presentation
      Seoul National University (KOREA)
    • Year and Date
      2016-06-27
    • Int'l Joint Research / Invited
  • [Presentation] On entropies of autoequivalences on smooth projective varieties2016

    • Author(s)
      Atsushi Takahashi
    • Organizer
      Intensive Lecture Series
    • Place of Presentation
      IBS Center for Geometry and Physics (KOREA)
    • Year and Date
      2016-05-11
    • Invited
  • [Funded Workshop] Mirror Symmetry and Related Topics, Kyoto 20162016

    • Place of Presentation
      京都大学数学教室
    • Year and Date
      2016-12-12 – 2016-12-16

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Published: 2018-01-16   Modified: 2022-02-16  

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