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Geometric structures defined by differential forms (Calabi-Yau structures, generalized Kaeher structures)

Research Project

Project/Area Number 22540082
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
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) OGUISO Keiji  大阪大学, 理学研究科, 教授 (40224133)
FUJIKI Akira  大阪大学, その他部局等, 名誉教授 (80027383)
満渕 俊樹  大阪大学, 理学研究科, 教授 (80116102)
梅原 雅顕  大阪大学, 理学研究科, 教授 (90193945)
Project Period (FY) 2010 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsからビーヤオ多様体 / 変形理論 / 一般化された幾何構造 / 双エルミート構造 / 一般化されたケーラー構造 / ポアソン構造 / カラビーヤオ構造 / 一般化された複素構造 / 一般化されたケーラ-構造 / 一般化された超ケーラ-構造 / 4次元多様体の対数変換 / リッチ平坦計量 / 一般化された幾何学 / 接触構造 / 佐々木構造 / リッチ平坦ケーラー計量 / ノン-ケーラー多様体_ / 局所等角ケーラー構造
Research Abstract

We obtain the following three results:
(1) Constructions of generalized Kaehler structures and unobstructed deformations:We established the stability theorem of generalized Kahler structures and constructed many interesting examples. As an application, we showed that there exists a non-trivial bihermitian structure on compact Kahler surfaces with non-zero holomorphic Poisson structures.
(2) New constructions of generalized complex 4-manifolds by logarithmic transformations:We explored the construction to apply arbitrary logarithmic transformations and obtain interesting generalized complex 4-manifods with arbitrary large number of type changing loci.
(3) Constructions of generalized Calabi-Yau metrics and generalized hyperKaehler structures:

Report

(4 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (14 results)

All 2012 2011 2010 Other

All Journal Article (11 results) (of which Peer Reviewed: 9 results) Presentation (3 results)

  • [Journal Article] Unobstructed K-deformations of Generalized Complex Structures and Bihermitian Structures2012

    • Author(s)
      R. Goto
    • Journal Title

      Advances in Math.

      Volume: 231 Pages: 1041-1067

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Calabi-Yau structures and Einstein-Sasakian structures on crepant resolutions of isolated singularities2012

    • Author(s)
      R. Goto
    • Journal Title

      J. Math. Society of Japan

      Volume: 64、No. 3 Pages: 1005-1052

    • NAID

      10031177259

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Deformations of generalized Calabi-Yau and generalized SU$(n)$-structures2012

    • Author(s)
      R. Goto
    • Journal Title

      Osaka Journal of Mathemati

      Volume: 49、No. 3 Pages: 795-832

    • NAID

      120005986494

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Calabi-Yau structures and Einstein-Sasakian structures on crepant resolutions of isolated singularities2012

    • Author(s)
      R. Goto
    • Journal Title

      J. Math. Society of Japan,

      Volume: 64 Pages: 1005-1052

    • NAID

      10031177259

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Deformations of generalized Calabi-Yau and generalized SU$(n)$-structures2012

    • Author(s)
      R. Goto
    • Journal Title

      Osaka Journal of Mathematic

      Volume: 49 Pages: 795-832

    • NAID

      120005986494

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Calabi-Yau structures and Einstein-Sasakian structures on crepant resolutions of isolated singularities2012

    • Author(s)
      後藤竜司
    • Journal Title

      J.Math.Society of Japan

      Volume: (掲載確定)(未定)

    • NAID

      10031177259

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Deformations of generalized Calabi-Yau, hyperK\"ahler, G$_2$ amd Spin$(7)$ structures2012

    • Author(s)
      後藤竜司
    • Journal Title

      Osaka Jouranl of Math

      Volume: (掲載確定)(未定)

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Deformations of generalized complex and generalized K¥"ahler structures2010

    • Author(s)
      R. Goto
    • Journal Title

      Journal of Differential Geometry

      Volume: 84、No. 3 Pages: 525-560

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Deformations of generalized complex and kahler structures2010

    • Author(s)
      Ryushi Goto
    • Journal Title

      Journal of Differential Geometry

      Volume: 84 Pages: 525-560

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] C^¥infty logarithmic transformations and generalized complex structures

    • Author(s)
      R. Goto and K. Hayano
    • Journal Title

      arXiv

      Volume: 1304 Pages: 4001-4001

    • Related Report
      2012 Final Research Report
  • [Journal Article] On the stability of locally conformal Kaehler structures

    • Author(s)
      R. Goto
    • Journal Title

      arXiv

      Volume: 1012 Pages: 2285-2285

    • Related Report
      2012 Final Research Report
  • [Presentation] Topics in generalized geometry2011

    • Author(s)
      後藤竜司
    • Organizer
      Tsinghua International Mathematics Forum
    • Place of Presentation
      Sanya(中国)(招待講演)
    • Year and Date
      2011-12-19
    • Related Report
      2011 Annual Research Report
  • [Presentation] Deformations of L.C.K.structures and generalized Kaehler structures2011

    • Author(s)
      後藤竜司
    • Organizer
      Geometric structures on manifolds, Moscow
    • Place of Presentation
      ステクロフ研究所(ロシア)(招待講演)
    • Year and Date
      2011-10-07
    • Related Report
      2011 Annual Research Report
  • [Presentation] Unobstructed K-deformations of generalized complex structures2010

    • Author(s)
      Ryushi Goto
    • Organizer
      Generalized complex and holomorphic Poisson geometry
    • Place of Presentation
      Banff International research station, (Canada)(招待講演)
    • Year and Date
      2010-04-11
    • Related Report
      2010 Annual Research Report

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Published: 2010-08-23   Modified: 2019-07-29  

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