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Geometry of twistor spaces

Research Project

Project/Area Number 22340012
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Geometry
Research InstitutionOsaka University

Principal Investigator

FUJIKI Akira  大阪大学, その他部局等, 名誉教授 (80027383)

Co-Investigator(Kenkyū-buntansha) ENOKI Ichiro  大阪大学, 理学研究科, 准教授 (20146806)
USUI Sampei  大阪大学, 理学研究科, 教授 (90117002)
OGUISO Keiji  大阪大学, 理学研究科, 教授 (40224133)
GOTO Ryushi  大阪大学, 理学研究科, 教授 (30252571)
Project Period (FY) 2010-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2010: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywordsツイスター空間 / 反自己双対多様体 / 双エルミート構造 / 非ケーラー曲面 / 反自己双対計量 / 井上曲面 / 自己同型群 / Joyce自己双対構造 / LeBrun自己双対構造 / Penrose対応 / 自己双対多様体 / ケーラー幾何学 / 複素多様体 / ハイパーケーラー多様体
Outline of Final Research Achievements

In 2010 the author and M. Pontecorvo have constructed real-analytic family of anti-self-dual bi-hermitian structures for any hyperbolic Inoue surfaces, for instance. The construction, however, is done via the construction of the associated twistor spaces, and therefore the geometry implication of the parameters as deformation of anti-self-dual hermitian structures.In this investigation, based on the notions of Lee bundle L and the associated L-Kahler classes we have found a new framework for discussing the situation, and at least in the neighborhood of the boundary of the moduli space this framework actually works effectively.

Report

(5 results)
  • 2014 Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (27 results)

All 2014 2013 2012 2011 2010 Other

All Journal Article (14 results) (of which Peer Reviewed: 14 results,  Acknowledgement Compliant: 1 results) Presentation (13 results) (of which Invited: 6 results)

  • [Journal Article] On the stability of locally conformal Kähler structures2014

    • Author(s)
      Goto, Ryushi
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: 66 Issue: 4 Pages: 1375-1401

    • DOI

      10.2969/jmsj/06641375

    • NAID

      130004706004

    • ISSN
      0025-5645, 1881-1167, 1881-2333
    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Automorphism groups of Joyce twistor spaces, (2013).2013

    • Author(s)
      Fujiki, Akira
    • Journal Title

      Kyoto Journal of Mathematics

      Volume: 53 No.2 Issue: 2 Pages: 143-170

    • DOI

      10.1215/21562261-2081252

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Automorphism groups of Joyce twistor spaces2013

    • Author(s)
      A. Fujiki
    • Journal Title

      Kyoto Journal of Mathematics (To appear)

      Volume: 53 Pages: 143-170

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quartic K3 surfaces and Cremona transformations2013

    • Author(s)
      K. Oguiso
    • Journal Title

      Fields Institute Communications

      Volume: 67 Pages: 203-208

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Classifying spaces of degenerating mixed Hodge structures, III: Spaces of nilpotent orbits2013

    • Author(s)
      K. Kato, C. Nakayama, and S. Usui
    • Journal Title

      J. Algebraic Geometry (to appear)

      Volume: 22 Pages: 1-94

    • NAID

      120006732765

    • 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)
      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 Mathematics

      Volume: 49 Pages: 795-832

    • NAID

      120005986494

    • 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 Mathematics

      Volume: 49

    • NAID

      120005986494

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Analyticity of the closures of some Hodge theoretic subspaces2011

    • Author(s)
      Kato, K., Nakayama, C., Usui, S.
    • Journal Title

      Proc.Janan Acad., Ser.A

      Volume: 87 Pages: 167-172

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Classifying spaces of degenerating mixed Hodge structures, II : Spaces of SL(2)-orbits2011

    • Author(s)
      Usui, S.
    • Journal Title

      Kyoto J.Math.

      Volume: 51 Pages: 149-261

    • NAID

      120006732764

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Non-upper semicontinuity of algebraic dimension for families of compact complex manifolds2010

    • Author(s)
      Fujiki, A., Pontecorvo M.
    • Journal Title

      Mathematische Annallen

      Volume: 348 Pages: 593-599

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anti-self-dual bihermitian structures on Inoue surfaces2010

    • Author(s)
      Fujiki, A., Pontecorvo M.
    • Journal Title

      Journal of Differential Geometry

      Volume: 85 Pages: 15-71

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Deformations of generalized complex and generalized Kahler structure2010

    • Author(s)
      Goto, R.
    • Journal Title

      Journal of Differential Geometry

      Volume: 84 Pages: 525-560

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Non-algebraic hyperkahler manifolds2010

    • Author(s)
      F.Campana, K.Oguiso, T.Peternell
    • Journal Title

      Journal of Differential Geometry

      Volume: 85 Pages: 397-424

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Donaldson-Friedman degenerations of anti-self-dual hermitian structures and Lee classes,2014

    • Author(s)
      Fujiki, Akira
    • Organizer
      Workshop “Complex Geometry and Lie Groups"
    • Place of Presentation
      University of Torino, Italy
    • Year and Date
      2014-06-20
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Bihermitian structures on Kato surfaces2013

    • Author(s)
      Fujiki, Akira
    • Organizer
      Workshop:"Symplectic Algebraic Geometry"
    • Place of Presentation
      関西セミナーハウス
    • Year and Date
      2013-10-05
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Examples of homologically trivial rational curves on certain Moishezon twistor spaces2013

    • Author(s)
      Fujiki, Akira
    • Organizer
      Classification of Algebraic Varieties and related topics
    • Place of Presentation
      Grand Hotel San Michele, Cetraro, Italy
    • Year and Date
      2013-09-14
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Joyce twistor space and the associated Kahler class2011

    • Author(s)
      藤木明
    • Organizer
      Geometric structures on complex manifolds
    • Place of Presentation
      Steklov Institute of Math., Moscow, Russia(招待講演)
    • Year and Date
      2011-10-06
    • Related Report
      2011 Annual Research Report
  • [Presentation] Some results on families of anti-self-dual bihermitian structures on hyperbolic Inoue surfaces2011

    • Author(s)
      藤木明
    • Organizer
      Journees Complexes Lorraines
    • Place of Presentation
      Institut Elie Cartan, Nancy, France(招待講演)
    • Year and Date
      2011-05-06
    • Related Report
      2011 Annual Research Report
  • [Presentation] Kahler cones on non-Kahler surfaces2011

    • Author(s)
      B.Fujiki
    • Organizer
      Workshop on Algebraic Geometry, Complex Dynamics and their Interaction
    • Place of Presentation
      National Univ.of Singapore, Singapore(招待講演)
    • Year and Date
      2011-01-07
    • Related Report
      2010 Annual Research Report
  • [Presentation] The geometric interpretation of parameters of families of ASD bihermitian structures on hyperbolic Inoue surfaces2010

    • Author(s)
      A.Fujiki
    • Organizer
      Geometry of complex manifolds IV
    • Place of Presentation
      CIRM, Luminy, France(招待講演)
    • Year and Date
      2010-11-29
    • Related Report
      2010 Annual Research Report
  • [Presentation] Locally conformally Kahler metrics and associated Kahler cones on compact non-Kahler surfaces2010

    • Author(s)
      A.Fujiki
    • Organizer
      The 16th International Symposium on Complex Geometry
    • Place of Presentation
      長野県上田市菅平高原1223ホテルゾンタック
    • Year and Date
      2010-11-21
    • Related Report
      2010 Annual Research Report
  • [Presentation] Bounded derived categories of very simple manifolds2010

    • Author(s)
      K.Oguiso
    • Organizer
      Complex Geometry, Group actions and Moduli spaces
    • Place of Presentation
      Hyderabad, India(招待講演)
    • Year and Date
      2010-08-15
    • Related Report
      2010 Annual Research Report
  • [Presentation] Neron models of the closures of some Hodge structures, III2010

    • Author(s)
      S.Usui
    • Organizer
      Summer school in log mixed Hodge theory and related topics
    • Place of Presentation
      ICTP, Trieste, Italy(招待講演)
    • Year and Date
      2010-07-01
    • Related Report
      2010 Annual Research Report
  • [Presentation] Automorphism groups of Joyce twistor spaces

    • Author(s)
      A. Fujiki
    • Organizer
      The 18th International Symposium on Complex Geometry
    • Place of Presentation
      長野県菅平
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Studying mirror symmetry through log mixed Hodge theory

    • Author(s)
      S. Usui
    • Organizer
      Hodge Theory, Complex Geometry, and Representation Theory;
    • Place of Presentation
      Texas Christian University, USA,
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Automorphism groups of Calabi-Yau manifolds of Picard number two

    • Author(s)
      K. Oguiso
    • Organizer
      Algebraic and complex geometry - a conference on the occasion of Klaus Hulek's 60-th birthday
    • Place of Presentation
      Hannover, Germany.
    • Related Report
      2012 Annual Research Report
    • Invited

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

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