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Generalized complex structures, 4 dimensional differential topology, noncommutative algebraic geometry and derived category

Research Project

Project/Area Number 16K13755
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Geometry
Research InstitutionOsaka University

Principal Investigator

Goto Ryushi  大阪大学, 理学研究科, 教授 (30252571)

Co-Investigator(Kenkyū-buntansha) 大川 新之介  大阪大学, 理学研究科, 准教授 (60646909)
Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords一般化された複素構造 / 一般化されたケーラー構造 / ポアソン構造 / アインシュタイン・エルミート計量 / モーメント写像 / スカラー曲率 / 小林・ヒッチン対応 / 正則ベクトル束 / 松島ーリヒネロビッツ定理 / 自己同型群 / ポアソン・モジュール / 一般化された複素多様体 / 非可換代数幾何 / 一般化されたケーラー多様体 / アインシュタインーエルミート計量 / 非可換代数曲面 / 一般化されたケーラー・アインシュタイン構造 / 変形理論
Outline of Final Research Achievements

In Kahler geometry, the scalar curvature arises as the moment map for the action of Hamiltonian diffeomorphisms. In generalized Kahler geometry, there was no suitable definition of Levi-civita connection and so the notion of the scalar curvature was not known. However the author reaches the precise definition of "scalar curvature"
which is the moment map from the novel framework of the infinite dimensional symplectic manifold on a generalized Kahler manifold.
Then he also yields the definition of mean curvature of generalized holomorphic vector bundles as the moment map and establishes the Kobayashi-Hitchin correspondence on generalized holomorphic vector bundles over a compact generalized Kahler manifold of symplectic type. The Kobayashi-Hitchin correspondence shows the equivalence between the poly-stablility of a generalized holomorphic vector bundle and the existence of generalized Einstein-Hermitian metric.

Academic Significance and Societal Importance of the Research Achievements

ベクトル束において平均曲率がモーメント写像として得られることは, Atiyah-Bott による顕著な結果であり, その後, 小林ーヒッチン対応, ヒッグス束と基本群の表現空間との同値性など, 様々な分野に大きな影響を与えた. この研究では一般化されたケーラ幾何学においても小林ーヒッチン対応が成立することを示しており、その意義は大きい. またスカラー曲率をモーメント写像としてとらえるこの研究は、ケーラー幾何学において, 現在急速に発展している Donaldson-Tian-Yau 予想が一般化されたケーラー幾何でも成立することを示唆している.

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (28 results)

All 2020 2019 2018 2017 2016

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (15 results) (of which Int'l Joint Research: 14 results,  Invited: 15 results) Funded Workshop (9 results)

  • [Journal Article] Scalar curvature as moment map in generalized Kahler geometry2020

    • Author(s)
      Ryushi Goto
    • Journal Title

      Journal of Symplectic Geometry

      Volume: 18 Pages: 147-190

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Scalar curvature as moment map in generalized Kahler geometry2020

    • Author(s)
      R. Goto
    • Journal Title

      The Journal of Symplectic Geometry

      Volume: 18

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Unobstructed deformations of generalized complex structures induced by C∞ logarithmic symplectic structures and logarithmic Poisson structures.2016

    • Author(s)
      Ryushi Goto
    • Journal Title

      Geometry and topology of manifolds, Springer Proc. Math. Stat.

      Volume: 154 Pages: 159-183

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] C∞-logarithmic transformations and generalized complex structures.2016

    • Author(s)
      Ryushi Goto and Kenta Hayano
    • Journal Title

      J. Symplectic Geom

      Volume: 14 Pages: 341-357

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Presentation] Scalar curvature as moment map in generalized Kahler geometry2019

    • Author(s)
      Ryushi Goto
    • Organizer
      Mathematics at the Interface of Science and Technology - HeKKSaGOn Meeting 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Scalar curvature as moment map in generalized Kahler geometry2019

    • Author(s)
      Ryushi Goto
    • Organizer
      The first geometry conference for friendship of Japan and Geometry
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Scalar curvature as moment map in generalized Kahler geometry2019

    • Author(s)
      Ryushi Goto
    • Organizer
      2019年度福岡大学微分幾何研究集会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Matsushima-Lichnerowiz type theorem of generalized Kahler manifolds2019

    • Author(s)
      Ryushi Goto
    • Organizer
      The 25th Symposium on Complex Geometry, Kanazawa
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Holomorphic Poisson structures in generalized Kahler geometry2019

    • Author(s)
      Ryushi Goto
    • Organizer
      Categorical and Analytic Invariants in Algebraic Geometry Ⅶ
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Scalar curvature is moment map in generalized Kahler geometry.2018

    • Author(s)
      R. Goto
    • Organizer
      Cohomology of Complex Manifolds and Special Structures Levico Terme (Trento),
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Einstein-Hermitian vector bundles over generalized Kahler manifolds2018

    • Author(s)
      R. Goto
    • Organizer
      The 24th Symposium on Complex Geometry , Kanazawa
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Einstein-Hermitian vector bundles over generalized Kahler manifolds2018

    • Author(s)
      R. Goto
    • Organizer
      第4回日中幾何学研究集会 (中国科学技術大学)合肥、
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Scalar curvature is moment map in generalized Kahler geometry.2017

    • Author(s)
      R. Goto
    • Organizer
      AMS Sectional Meeting AMS Special Session,Fall Western Sectional Meeting University of California, Riverside, Riverside, CA
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Holomorphic Poisson structures and generalized Kahler geometry”2017

    • Author(s)
      R. Goto
    • Organizer
      University of California, Riverside, Department of Mathematics, Colloquium
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Moduli spaces of Einstein-Hermitian generalized connections over generalized Kahler manifolds of symplectic type2017

    • Author(s)
      R. Goto
    • Organizer
      The 23rd Symposium on Complex geometry (Kanazawa)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Stratified flat structure on the moduli space of generalized complex surfaces,2016

    • Author(s)
      Ryushi Goto
    • Organizer
      HAYAMA Symposium on Complex Analysis in Several Variables XVIII
    • Place of Presentation
      Hayama, Japan
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Scalar curvature as moment map in generalized Kahler geometry,2016

    • Author(s)
      Ryushi Goto
    • Organizer
      The 22nd Symposium on Complex Geometry in Kanazawa,
    • Place of Presentation
      Kanazawa, Japan
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Scalar curvature as moment map in generalized Kahler geometry2016

    • Author(s)
      Ryushi Goto
    • Organizer
      Generalized Geometry and Noncommutative Algebra, CMI Workshop
    • Place of Presentation
      Oxford, UK
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Scalar curvature as moment map in generalized Kahler geometry2016

    • Author(s)
      Ryushi Goto
    • Organizer
      The second China-Japan geometry conference at Fujian Normal University
    • Place of Presentation
      Fujian, China
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Funded Workshop] 第5回日中幾何学研究集会2019

    • Related Report
      2019 Annual Research Report
  • [Funded Workshop] The 25th Symposium on Complex Geometry2019

    • Related Report
      2019 Annual Research Report
  • [Funded Workshop] 第4回日中幾何学研究集会 (中国科学技術大学)合肥、中国 9月2018

    • Related Report
      2018 Research-status Report
  • [Funded Workshop] Complex Geometry and Lie groups, Firentze, Italy, June2018

    • Related Report
      2018 Research-status Report
  • [Funded Workshop] 第24回複素幾何シンポジウム、金沢 11月2018

    • Related Report
      2018 Research-status Report
  • [Funded Workshop] The 23rd symposium of Complex geometry (Kanazawa)2017

    • Related Report
      2017 Research-status Report
  • [Funded Workshop] 第3回日中幾何学研究集会2017

    • Related Report
      2017 Research-status Report
  • [Funded Workshop] The 22nd Symposium on Complex Geometry in Kanazawa2016

    • Place of Presentation
      しいのき迎賓館 金沢
    • Year and Date
      2016-11-01
    • Related Report
      2016 Research-status Report
  • [Funded Workshop] The second China-Japan geometry conference at Fujian Normal University,2016

    • Place of Presentation
      Fujian noraml University, Fujian, China
    • Year and Date
      2016-09-06
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2021-02-19  

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