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2008 Fiscal Year Final Research Report

Complex symplectic varieties

Research Project

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Project/Area Number 18340009
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Algebra
Research InstitutionKyoto University (2008)
Osaka University (2006-2007)

Principal Investigator

NAMIKAWA Yoshinori  Kyoto University, 大学院・理学研究科, 教授 (80228080)

Co-Investigator(Kenkyū-buntansha) FUJIKI Akira  大阪大学, 大学院・理学研究科, 教授 (80027383)
GOTO Ryushi  大阪大学, 大学院・理学研究科, 准教授 (30252571)
TAKAHASHI Atsushi  大阪大学, 大学院・理学研究科, 准教授 (50314290)
USUI Sampei  大阪大学, 大学院・理学研究科, 教授 (90117002)
OHNO Koji  大阪大学, 大学院・理学研究科, 助教 (20252570)
SATAKE Ikuo  大阪大学, 大学院・理学研究科, 助教 (80243161)
Co-Investigator(Renkei-kenkyūsha) FUJIKI Akira  大阪大学, 大学院・理学研究科, 教授 (80027383)
GOTO Ryushi  大阪大学, 大学院・理学研究科, 准教授 (30252571)
TAKAHASHI Atsushi  大阪大学, 大学院・理学研究科, 准教授 (50314290)
Project Period (FY) 2006 – 2008
Keywords複素シンプレクティック多様体 / ポアソン変形 / 双有理幾何 / べき零軌道 / 向井フロップ
Research Abstract

アファイン複素シンプレクティック多様体 X で特異点を持ったものを重点的に研究した.研究成果の2つの柱は、ポアソン変形とべき零軌道である.
ポアソン変形に関しては、X の普遍ポアソン変形空間 PDef(X) が非特異であることを証明し、さらにX のクレパント特異点解消 Y の普遍ポアソン変形空間 PDef(Y)が PDef(X)のガロア被覆になることも示した.べき零軌道に関しては、その閉包として得られる複素シンプレクティック多様体のクレパント特異点解消、Q-factorial terminalization とよばれる部分特異点解消について結果を得た.

  • Research Products

    (18 results)

All 2008 2007 2006 Other

All Journal Article (6 results) Presentation (12 results)

  • [Journal Article] Birational geometry and deformations of nilpotent orbits2008

    • Author(s)
      Y. Namikawa
    • Journal Title

      Duke Math. J Vol 143

      Pages: 375-405

  • [Journal Article] Flops and Poisson deformations of symplectic varieties2008

    • Author(s)
      Y. Namikawa
    • Journal Title

      Publ. RIMS Vol 44

      Pages: 259-314

  • [Journal Article] 双有理幾何とべき零軌道2008

    • Author(s)
      並河良典
    • Journal Title

      数学 Vol 60

      Pages: 295-318

  • [Journal Article] Birational geometry of symplectic resolutions of nilpotent orbits2006

    • Author(s)
      Y. Namikawa
    • Journal Title

      Adv.Stud. Pure Math Vol 45

      Pages: 75-116

  • [Journal Article] On deformations of Q-factorial symplectic varieties2006

    • Author(s)
      Y. Namikawa
    • Journal Title

      J. Reine Angew. Math Vol 599

      Pages: 97-110

  • [Journal Article] Induced nilpotent orbits and birational geometry

    • Author(s)
      Y. Namikawa
    • Journal Title

      to appear in Advances in Mathematics

  • [Presentation] Induced nilpotent orbits and birational geometry2008

    • Author(s)
      Y. Namikawa
    • Organizer
      COW-COE Tokyo
    • Place of Presentation
      東大数理
    • Year and Date
      20081200
  • [Presentation] Poisson deformations and symplectic varieties2008

    • Author(s)
      Y. Namikawa
    • Organizer
      Pacific Rim Conference
    • Place of Presentation
      Seoul, Korea
    • Year and Date
      20080700
  • [Presentation] べき零軌道と双有理代数幾何2008

    • Author(s)
      並河良典
    • Organizer
      日本数学会特別講演(代数学賞受賞講演)
    • Place of Presentation
      近畿大
    • Year and Date
      20080300
  • [Presentation] Induced nilpotent orbits and birational geometry2008

    • Author(s)
      Y. Namikawa
    • Organizer
      城崎代数幾何シンポジウム
    • Place of Presentation
      城崎大会議館
    • Year and Date
      20080000
  • [Presentation] Poisson deformations and symplectic varieties2008

    • Author(s)
      Y. Namikawa
    • Organizer
      UK-Japan Winter school, Algebraic and symplectic geometry
    • Place of Presentation
      University of Warwick, England
    • Year and Date
      2008-01-08
  • [Presentation] Poisson deformations and symplectic varieties2007

    • Author(s)
      Y. Namikawa
    • Organizer
      Algebraic geometry and commutative algebra Tokyo 2007
    • Place of Presentation
      東京大
    • Year and Date
      2007-12-14
  • [Presentation] Poisson deformations and symplectic varieties2007

    • Author(s)
      Y. Namikawa
    • Organizer
      Complex Geometry in Osaka
    • Place of Presentation
      大阪大中之島センター
    • Year and Date
      2007-11-04
  • [Presentation] べき零軌道と双有理代数幾何、高次元代数多様体と2007

    • Author(s)
      Y. Namikawa
    • Organizer
      ベクトル束の代数幾何学
    • Place of Presentation
      九州大
    • Year and Date
      2007-09-11
  • [Presentation] Poisson deformations and symplectic varieties2007

    • Author(s)
      Y. Namikawa
    • Organizer
      代数学シンポジウム
    • Place of Presentation
      神戸大
    • Year and Date
      2007-08-08
  • [Presentation] Birational geometry for nilpotent orbits and Mukai flops2007

    • Author(s)
      Y.Namikawa
    • Organizer
      flops, Modular forms and Moduli spaces
    • Place of Presentation
      Euler Inst. (Saint Petersburg, Russia)
    • Year and Date
      2007-07-03
  • [Presentation] Birational geometry for nilpotent orbits, Conference "Higher dimensional Algebraic Geometry"2006

    • Author(s)
      Y.Namikawa
    • Organizer
      Echigo Yuzawa
    • Place of Presentation
      Japan
    • Year and Date
      20061200
  • [Presentation] Flops and Poisson deformations of symplectic varieties2006

    • Author(s)
      Y.Namikawa
    • Organizer
      Work shop on holomorphic symplectic varieties, Max-Planck Inst
    • Place of Presentation
      Bonn, Germany
    • Year and Date
      20060500

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Published: 2010-06-10   Modified: 2016-04-21  

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