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2013 Fiscal Year Annual Research Report

複素解析幾何学の新展開

Research Project

Project/Area Number 22244008
Research InstitutionThe University of Tokyo

Principal Investigator

平地 健吾  東京大学, 数理(科)学研究科(研究院), 教授 (60218790)

Project Period (FY) 2010-04-01 – 2015-03-31
Keywordsケーラー多様体 / 放物型幾何 / 値分布論 / アインシュタイン計量 / 特異点 / 連接層 / CR多様体
Research Abstract

研究集会: 多変数函数論葉山シンポジウムでは海外からの招聘研究者10名を含む17名の講演者を迎え,表現論・調和解析と多変数複素解析との意見交換を行った.また函数論の研究者の相互理解を図るために福島大学において多変数函数論冬セミナーを,早稲田大学において函数論シンポジウムを開催した.
研究の進展状況: 平地健吾はCR多様体の大域不変量である全Q'曲率の研究を進め,その変分公式に新しい高階のCR不変微分作用素が現れることを示した.大沢健夫はN. Shcherbina教授を招聘しレビ平坦性について研究交流を行い,ホップ曲面内の実解析的レビ平坦面で正則域の境界となるものを分類した.本多宣博はCP1の上のアファイン直線束の次数が負であればALEなスカラー平坦ケーラー計量が存在することを示した.野口潤次郎は正則曲線の値分布と整数点集合及び小林双曲性の研究を推進した.高山茂晴は射影空間内の部分多様体に対して定義されるグラスマン多様体に値をとる一般化されたガウス写像の研究を行い,ガウス写像の像のプリュッカー次数のエフェクティブな評価を与えた.伊師英之はリー群の一般化最高ウェイトユニタリ表現が等質ケーラー多様体上の量子化直線束の正則切断の空間に実現されるというボレル・ヴェイユ型定理を確立した.辻元はextremal measure のiterationを研究し,それが,ケーラー・アインシュタイン体積形式に収束することを証明した.吉川謙一は川口周,向井茂と共同で,BorcherdsのΦ関数に対する代数的表示を得た.また馬昭平と共同で,対合付きK3曲面の解析的捩率不変量を一つの例外を除き全て決定した.奥間智弘は複素2次元特異点を対象に,幾何種数イデアルの概念を導入して基本性質を示し,good ideal の存在性を Gorenstein 特異点と有理型特異点の場合に示した.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

葉山シンポジウムの代表者を表現論および調和解析の若手研究者である伊師英之氏が務め,多変数複素解析の枠組みを広げる意見交換を行った.東京大学での月曜セミナーの世話人をPDの松本佳彦氏がつとめ,多くの大学院生および若手研究者に発表と討議の場を与えることができた.個々の研究についても上記の概要に述べたように多くの成果が得られている.

Strategy for Future Research Activity

夏には本多宣博氏および神本丈氏を中心として葉山シンポジウムを開催する.秋には大学院生を中心とした研究集会函数論サマーセミナーを行う.また冬には函数論シンポジウムおよび多変数関数論冬セミナーを開催する.東京大学で毎週開催するセミナーでは連携研究者を中心に最新の研究成果の発表を行う.3月にはプリンストン大学と共同で解析幾何のワークショップを開催する.

  • Research Products

    (38 results)

All 2014 2013

All Journal Article (14 results) (of which Peer Reviewed: 14 results,  Acknowledgement Compliant: 1 results) Presentation (22 results) (of which Invited: 21 results) Book (2 results)

  • [Journal Article] Q-prime curvature on CR manifolds2014

    • Author(s)
      K. Hirachi
    • Journal Title

      Diff. Geom. Appl.

      Volume: 33 Suppl Pages: 213-245

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Koranyi's lemma for homogeneous Siegel domains of type II. Applications and extended results2014

    • Author(s)
      D. Bekolle, H. Ishi and C. Nana
    • Journal Title

      Bull. Aust. Math. Soc.

      Volume: 90 Pages: 77-89

    • Peer Reviewed
  • [Journal Article] A Lemma on Hartogs Function and Application to Levi Flat Hypersurfaces in Hopf Surfaces2014

    • Author(s)
      T. Ohsawa
    • Journal Title

      Kobayashi Memorial Volume (Progress in Mathematics)

      Volume: 未定 Pages: 未定

    • Peer Reviewed
  • [Journal Article] The Maximal Ideal Cycles Over Complete Intersection Surface Singularities of Brieskorn Type2014

    • Author(s)
      F.-N. Meng and T. Oakuma
    • Journal Title

      Kyushu J. Math.

      Volume: 67 Pages: 未定

    • Peer Reviewed
  • [Journal Article] Nonexistence of certain Levi flat hypersurfaces in Kahler manifolds from the viewpoint of positive normal bundles2013

    • Author(s)
      T. Ohsawa
    • Journal Title

      Publ. Res. Inst. Math. Sci.

      Volume: 49 Pages: 229-239

    • Peer Reviewed
  • [Journal Article] Gunning-Narasimhan's theorem with a growth condition2013

    • Author(s)
      F. Forstneric and T. Ohsawa
    • Journal Title

      J. Geom. Anal.

      Volume: 23 Pages: 1078-1084

    • DOI

      10.1007/s12220-011-9274-0

    • Peer Reviewed
  • [Journal Article] Deformation of LeBrun's ALE metrics with negative mass2013

    • Author(s)
      N. Honda and J. Viaclovsky
    • Journal Title

      Comm. Math. Phys.

      Volume: 322 Pages: 127-148

    • DOI

      10.1007/s00220-012-1656-z

    • Peer Reviewed
  • [Journal Article] Toric LeBrun metrics and Joyce metrics2013

    • Author(s)
      N. Honda and J. Viaclovsky
    • Journal Title

      Geometry and Topology

      Volume: 17 Pages: 2923-2934

    • Peer Reviewed
  • [Journal Article] Degeneracy of holomorphic curves into algebraic varieties I2013

    • Author(s)
      J. Noguchi, J. Winkelmann and K. Yamanoi
    • Journal Title

      Vietnum J. Math

      Volume: 14 Pages: 519-525

    • DOI

      10.1007/s10013-013-0051-1

    • Peer Reviewed
  • [Journal Article] On Oka's extra-zero problem and examples2013

    • Author(s)
      M. Abe, S. Hamano and J. Noguchi
    • Journal Title

      Math. Z.

      Volume: 275 Pages: 79-89

    • DOI

      10.1007/s00209-012-1123-8

    • Peer Reviewed
  • [Journal Article] The unitary representations parametrized by the Wallach set for a homogeneous bounded domain2013

    • Author(s)
      H, Ishi
    • Journal Title

      Adv. Pure Appl. Math.

      Volume: 4 Pages: 93-102

    • Peer Reviewed
  • [Journal Article] K3 surfaces with involution, equivariant analytic torsion, and automorphic forms on the moduli space II: a structure theorem for r(M)>102013

    • Author(s)
      K.-I. Yoshikawa
    • Journal Title

      J. reine angew. math.

      Volume: 677 Pages: 15-70

    • DOI

      10.1515/crelle.2012.009

    • Peer Reviewed
  • [Journal Article] :A trinity of the Borcherds Phi-function2013

    • Author(s)
      K.-I. Yoshikawa
    • Journal Title

      Springer Proceedings in Mathematics & Statistics

      Volume: 40 Pages: 575-597

    • DOI

      10.1007/978-1-4471-4863-0_25

    • Peer Reviewed
  • [Journal Article] New examples of Sasaki-Einstein manifolds2013

    • Author(s)
      T. Mabuchi and Y. Nakagawa
    • Journal Title

      Tohoku Math. J.

      Volume: 65 Pages: 159-311

    • Peer Reviewed
  • [Presentation] Equivariant analytic torsion for K3 surfaces with involution2014

    • Author(s)
      K.-I. Yoshikawa
    • Organizer
      Moduli spaces of irreducible symplectic varieties, cubics and Enriques surfaces
    • Place of Presentation
      Universite Lille 1 (France)
    • Year and Date
      20140326-20140326
    • Invited
  • [Presentation] Logarithmic 1-forms and distributions of entire curves and integral points2014

    • Author(s)
      野口潤次郎
    • Organizer
      複素解析幾何セミナー
    • Place of Presentation
      東京大学
    • Year and Date
      20140127-20140127
  • [Presentation] Generalized highest weight unitary representations of a split solvable Lie group2013

    • Author(s)
      Hideyuki Ishi
    • Organizer
      3rd Tunisian-Japanese conference
    • Place of Presentation
      Hammamet (Tunisia)
    • Year and Date
      20131220-20131220
    • Invited
  • [Presentation] Good ideals for normal surface singularities2013

    • Author(s)
      Tomohiro Okuma
    • Organizer
      Hyperplane Arrangements and Characteristic classes
    • Place of Presentation
      京都大学
    • Year and Date
      20131112-20131112
    • Invited
  • [Presentation] An effective birationality of pluricanonical maps for a family of canonically polarized manifolds over a curve2013

    • Author(s)
      高山 茂晴
    • Organizer
      代数幾何学城崎シンポジウム
    • Place of Presentation
      城崎大会議館
    • Year and Date
      20131024-20131024
    • Invited
  • [Presentation] Analytic torsion and mirror symmetry2013

    • Author(s)
      K.-I. Yoshikawa
    • Organizer
      Paris-Kyoto-Barcelona seminar on Arakelov geometry
    • Place of Presentation
      Universite Paris 6 (France)
    • Year and Date
      20130925-20130925
    • Invited
  • [Presentation] Good ideals for Gorenstein surface singularities2013

    • Author(s)
      Tomohiro Okuma
    • Organizer
      The 1st Franco-Japanese- Vietnamese Symposium on Singularities
    • Place of Presentation
      Universite Nice (France)
    • Year and Date
      20130921-20130921
    • Invited
  • [Presentation] Deformations of LeBrun's ALE metric with negative mass2013

    • Author(s)
      本多宣博
    • Organizer
      The 8th Pacific Rim Complex Geometry Conference
    • Place of Presentation
      大連工科大学(中国)
    • Year and Date
      20130805-20130805
    • Invited
  • [Presentation] Q-prime curvature in CR geometry2013

    • Author(s)
      K. Hirachi
    • Organizer
      Conference on geometrical analysis
    • Place of Presentation
      Centre de Recerca Mathematica (Spain)
    • Year and Date
      20130704-20130704
    • Invited
  • [Presentation] Levi flats in Hopf surfaces2013

    • Author(s)
      T. Ohsawa
    • Organizer
      THE ABEL SYMPOSIUM 2013 Complex geometry
    • Place of Presentation
      Trondheim (Norway)
    • Year and Date
      20130704-20130704
    • Invited
  • [Presentation] 分裂型実可解リー群の一般化最高ウェイトユニタリ表現2013

    • Author(s)
      伊師英之
    • Organizer
      表現論および表現論の関連する諸分野の発展
    • Place of Presentation
      京都大学
    • Year and Date
      20130626-20130626
    • Invited
  • [Presentation] On the algebraic degeneracy of entire curves2013

    • Author(s)
      J. Noguchi
    • Organizer
      Workshop on Rational Points, Rational Curves and Entire Holomorphic Curves on Projective Varieties
    • Place of Presentation
      University of Montreal (Canada)
    • Year and Date
      20130621-20130621
    • Invited
  • [Presentation] On the degeneracy of entire curves2013

    • Author(s)
      J. Noguchi
    • Organizer
      Workshop "Complex Analysis and Geometry''
    • Place of Presentation
      Levico Trento (Italy)
    • Year and Date
      20130606-20130606
    • Invited
  • [Presentation] Dynamical systems of extremal measures2013

    • Author(s)
      Hajime Tsuji
    • Organizer
      Extremal Kahler metrics
    • Place of Presentation
      CIRM Montreal (Canada)
    • Year and Date
      20130601-20130601
    • Invited
  • [Presentation] Equivariant analytic torsion for K3 surfaces with involution2013

    • Author(s)
      K.-I. Yoshikawa
    • Organizer
      Control, index, traces and determinants
    • Place of Presentation
      Universitw Paris-Sud (France)
    • Year and Date
      20130527-20130527
    • Invited
  • [Presentation] A new invaraiant measure in complex geometry2013

    • Author(s)
      H. Tsuji
    • Organizer
      Kobayashi memorial symposium
    • Place of Presentation
      東京大学
    • Year and Date
      20130526-20130526
    • Invited
  • [Presentation] Levi flats in Hopf surfaces Geometry and Analysis on Manifolds2013

    • Author(s)
      T. Ohsawa
    • Organizer
      A Memorial Symposium for Professor Shoshichi Kobayashi
    • Place of Presentation
      東京大学
    • Year and Date
      20130523-20130523
    • Invited
  • [Presentation] Kobayashi hyperbolicity and Lang's conjecture2013

    • Author(s)
      J. Noguchi
    • Organizer
      Geometry and Analysis on Manifolds--in honor of Professor Shoshichi Kobayashi
    • Place of Presentation
      東京大学
    • Year and Date
      20130522-20130522
    • Invited
  • [Presentation] An effective birationality of pluricanonical maps for a family of canonically polarized manifolds over a curve2013

    • Author(s)
      S. Takayama
    • Organizer
      Complex Geometry Conference
    • Place of Presentation
      KIAS (韓国)
    • Year and Date
      20130509-20130509
    • Invited
  • [Presentation] Some constructions of singular hermitian metrics with semipositive curvature on relative adjoint bundles2013

    • Author(s)
      H. Tsuji
    • Organizer
      Complex Geometry Conference
    • Place of Presentation
      KIAS (韓国)
    • Year and Date
      20130508-20130508
    • Invited
  • [Presentation] Resultants and the Borcherds Phi-function2013

    • Author(s)
      K.-I. Yoshikawa
    • Organizer
      Complex Geometry Conference
    • Place of Presentation
      KIAS (韓国)
    • Year and Date
      20130507-20130507
    • Invited
  • [Presentation] Analytic torsion for log-Enriques surfaces2013

    • Author(s)
      K.-I. Yoshikawa
    • Organizer
      Differential Geometry Seminar
    • Place of Presentation
      University of California, Santa Barbara (USA)
    • Year and Date
      20130412-20130412
    • Invited
  • [Book] Nevanlinna Theory in Several Complex Variables and Diophantine Approximation2014

    • Author(s)
      J. Noguchi and J. Winkelmann
    • Total Pages
      430
    • Publisher
      Springer
  • [Book] 多変数解析関数論2013

    • Author(s)
      野口潤次郎
    • Total Pages
      368
    • Publisher
      朝倉書店

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Published: 2015-05-28  

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