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2007 Fiscal Year Annual Research Report

幾何学と可積分系理論の融合と発展

Research Project

Project/Area Number 19204006
Research InstitutionTohoku University

Principal Investigator

宮岡 礼子  Tohoku University, 大学院・理学研究科, 教授 (70108182)

Co-Investigator(Kenkyū-buntansha) 山田 光太郎  九州大学, 大学院・数理学研究院, 教授 (10221657)
岩崎 克則  九州大学, 大学院・数理学研究院, 教授 (00176538)
梶原 健司  九州大学, 大学院・数理学研究院, 准教授 (40268115)
中屋敷 厚  九州大学, 大学院・数理学研究院, 准教授 (10237456)
長友 康行  九州大学, 大学院・数理学研究院, 准教授 (10266075)
Keywords等径超曲面 / G_2軌道 / パンルヴェ方程式 / 特異点のモデュライ / 調和写像論 / Yang-Mills接続 / アインシュタイン計量 / 量子コホモロジー論
Research Abstract

宮岡の統括の下,分担者は各分担に応じて以下の成果を得ている.
宮岡は継続して等径超曲面の分類問題を研究し,G_2軌道の幾何を解明した.二木はケーラー・アインシュタイン計量の存在およびケーラー・リッチソリトンの存在問題においてモンジュ・アンペール方程式の近似解が収束しない場合に現れる乗数イデアル層についての成果を得た.藤岡は曲線の可積分な運動について、複素双曲線上の閉曲線のなす空間を考察した。梶原はToda方程式の解の行列式構造,q-パンルヴェ方程式の超幾何解の構成等に成果をあげた.中屋敷はシグマ関数の代数的積分による表示式の詳細,可積分系のタウ関数のシグマ関数による表示式を与えその退化を調べた。岩崎は指標多様体上の写像類群作用の力学系とパンルヴェ方程式の力学系についてリーマン・ヒルベルト対応を通してその大域挙動を研究した。入谷は量子コホモロジーにおける実・整構造について,特に,トーリック軌道体の場合に,ミラー対称性から定まる量子コホモロジーの整構造を位相的に記述した.GuestはOrbifold量子コホモロジーと微分方程式を研究し,可積分系と量子コホモロジーの本を著した.佐々木は超幾何微分方程式の定める双曲シュバルツ写像の像曲面の特異点を調べた。山田,梅原,ラスマンは,特異点を許した平坦フロントの焦面が平坦なフロントとなることを示した.ラスマンはspace form内の離散的な保存量を持つ曲面について調べた.石川は微分方程式の特異点の分類,平面曲線の局所・大域的分類,ルジャンドル曲線とグルザ分布の分類を進展させた.田丸は非コンパクト等質Einstein可解多様体についての研究を行い,放物型部分群と部分多様体論を用いて多くの例を構成した.川久保はKirchhoff弾性棒のエネルギー汎関数がPalais-Smale条件を満たすことを証明した.長友は種々の対称空間で等径関数の等位曲面を調べた.

  • Research Products

    (40 results)

All 2008 2007

All Journal Article (31 results) (of which Peer Reviewed: 30 results) Presentation (8 results) Book (1 results)

  • [Journal Article] The Gauss map of pseudo-algebraic minimal surfaces2008

    • Author(s)
      R. Miyaoka
    • Journal Title

      Forum Mathematicum (To appear)

    • Peer Reviewed
  • [Journal Article] Isoparametric geometry and related fields2008

    • Author(s)
      R. Miyaoka
    • Journal Title

      Adv. Studies Pure Math. (To appear)

    • Peer Reviewed
  • [Journal Article] Generic singularities of implicit systems of first order differential equations on the plane2008

    • Author(s)
      G. lshikawa
    • Journal Title

      Japanese Journal of Mathematics 3

      Pages: 93-119

    • Peer Reviewed
  • [Journal Article] Global classification of curves on the symplectic plane2008

    • Author(s)
      G. Ishikawa
    • Journal Title

      Contemporary Mathematics, Amer. Math. Soc. (To appear)

    • Peer Reviewed
  • [Journal Article] Uniqueness and examples of toric Sasaki-Einstein manifolds2008

    • Author(s)
      A. Futaki
    • Journal Title

      Comm. Math. Phys. 277

      Pages: 439-458

    • Peer Reviewed
  • [Journal Article] Toric Sasaki-Einstein geometry2008

    • Author(s)
      A. Futaki
    • Journal Title

      Proceedings of 4-th International Congress of Chinese Mathematicians 1

      Pages: 102-119

    • Peer Reviewed
  • [Journal Article] Differential structure of Abelian functions2008

    • Author(s)
      A. Nakayashiki
    • Journal Title

      Int. J. of Math. 19

      Pages: 145-171

    • Peer Reviewed
  • [Journal Article] Some dynamical aspects of Painleve VI2008

    • Author(s)
      K. Iwasaki
    • Journal Title

      Algebraic Analysis of Differential Equations, Springer-Verlag, Berlin-Tokyo,

      Pages: 143-156

    • Peer Reviewed
  • [Journal Article] Finite branch solutions to Painleve VI around a fixed singular point2008

    • Author(s)
      K. Iwasaki
    • Journal Title

      Advances in Mathematics 217

      Pages: 1889-1934

    • Peer Reviewed
  • [Journal Article] Interpolation of Markoff transformations on the Fricke surface2008

    • Author(s)
      T. Sasaki
    • Journal Title

      Tohoku Math. J. 60

      Pages: 23-36

    • Peer Reviewed
  • [Journal Article] Homogeneous two-manifolds with an invariant two-form2008

    • Author(s)
      T. Sasaki
    • Journal Title

      J. Geometry (In press)

    • Peer Reviewed
  • [Journal Article] Hyperbolic Schwarz map for the hypergeometric equation2008

    • Author(s)
      T. Sasaki
    • Journal Title

      Experiment. Math. (In press)

    • Peer Reviewed
  • [Journal Article] Singularities of maximal surfaces2008

    • Author(s)
      K. Yamada
    • Journal Title

      Mathematische Zeitschrift (To appear)

    • Peer Reviewed
  • [Journal Article] Delaunay ends of constant mean curvature surfaces2008

    • Author(s)
      W. Rossman
    • Journal Title

      Compositio Math. 144

      Pages: 186-220

    • Peer Reviewed
  • [Journal Article] Computers and Mathematics: Applications of computers to integrable systems methods for constructing constant mean curvature surfaces2008

    • Author(s)
      W. Rossman
    • Journal Title

      Sugaku 60

      Pages: 95-103

    • Peer Reviewed
  • [Journal Article] Morse index of constant mean curvature tori of revolution in the 3-sphere2008

    • Author(s)
      W. Rossman
    • Journal Title

      Illinois J. Math. (To appear)

    • Peer Reviewed
  • [Journal Article] On the spectra of Jacobi operators for constant mean curvature tori of revolution in the 3-sphere2008

    • Author(s)
      W. Rossman
    • Journal Title

      Tokyo Math. J. (To appear)

    • Peer Reviewed
  • [Journal Article] Noncompact homogeneous Einstein manifolds attached to graded Lie algebras2008

    • Author(s)
      H. Tamaru
    • Journal Title

      Math. Z. (To appear)

    • Peer Reviewed
  • [Journal Article] Lie groups locally isomorphic to generalized Heisenberg groups2008

    • Author(s)
      H. Tamaru
    • Journal Title

      Proc. Amer. Math. Soc. (To appear)

    • Peer Reviewed
  • [Journal Article] The Twistor sections on the Wolf spaces2008

    • Author(s)
      Y. Nagatomo
    • Journal Title

      Trans. AMS (To appear)

    • Peer Reviewed
  • [Journal Article] Classification of phase singularities for complex scalar waves and their bifurcations2007

    • Author(s)
      G. Ishikawa
    • Journal Title

      Nonlinearity 20

      Pages: 1907-1925

    • Peer Reviewed
  • [Journal Article] Zariski's moduli problem for plane branches and the classification of Legendre curve singularities in Real and Complex Singularities2007

    • Author(s)
      G. Ishikawa
    • Journal Title

      Proceedings of the Australian-Japanese Workshop

      Pages: 56-84

  • [Journal Article] Trigonal minimal surfaces in flat tori2007

    • Author(s)
      T. Shoda
    • Journal Title

      Pacific Journal of Mathematics 232

      Pages: 401-422

    • Peer Reviewed
  • [Journal Article] Hypergeometric solutions to the q-Painleve equation of typeA_4^(1)2007

    • Author(s)
      K. Kajiwara
    • Journal Title

      J. Phys. A: Math. Theor. 40

      Pages: 12509-12524

    • Peer Reviewed
  • [Journal Article] A remark on the Hankel determinant formula for solutions of the Toda equation2007

    • Author(s)
      K. Kajiwara
    • Journal Title

      J. Phys. A: Math. Theor. 40

      Pages: 12661-12675

    • Peer Reviewed
  • [Journal Article] An ergodic study of Painleve VI2007

    • Author(s)
      K. Iwasaki
    • Journal Title

      Mathematische Annalen 338

      Pages: 295-345

    • Peer Reviewed
  • [Journal Article] Chaos in the sixth Painleve equation2007

    • Author(s)
      K. Iwasaki
    • Journal Title

      RIMS Kokyuroku Bessatsu B2

      Pages: 73-88.

    • Peer Reviewed
  • [Journal Article] Convergence of quantum cohomology by quantum Lefschetz2007

    • Author(s)
      H. Iritani
    • Journal Title

      J. Reine. Angew. Math. 610

      Pages: 29-69

    • Peer Reviewed
  • [Journal Article] Flat fronts in hyperbolic 3-space and their caustics2007

    • Author(s)
      K. Yamada
    • Journal Title

      Journal of the Mathematical Society of Japan 59

      Pages: 265-299

    • Peer Reviewed
  • [Journal Article] Unitarization of monodromy representations and constant mean curvature trinoids in 3-dimensional space forms2007

    • Author(s)
      W. Rossman
    • Journal Title

      J. London Math. Society 75

      Pages: 563-581

    • Peer Reviewed
  • [Journal Article] Cohomogeneity one actions on noncompact symmetric spaces of rank one2007

    • Author(s)
      H. Tamaru
    • Journal Title

      Trans. Amer. Math. Soc. 359

      Pages: 3425-3438

    • Peer Reviewed
  • [Presentation] On isoparametric hypersurfaces2008

    • Author(s)
      R. Miyaoka
    • Organizer
      Geometry Seminar
    • Place of Presentation
      Augsburg U.
    • Year and Date
      2008-03-06
  • [Presentation] The geometry of G_2 orbits and hypersurfaces2007

    • Author(s)
      R. Miyaoka
    • Organizer
      「曲線と曲面の非線型解析」
    • Place of Presentation
      埼玉大
    • Year and Date
      2007-12-27
  • [Presentation] G_2軌道と超曲面の幾何学2007

    • Author(s)
      R. Miyaoka
    • Organizer
      東北大談話会
    • Place of Presentation
      東北大学
    • Year and Date
      2007-11-05
  • [Presentation] 等径超曲面の等質性について2007

    • Author(s)
      R. Miyaoka
    • Organizer
      大阪大学幾何セミナー
    • Place of Presentation
      大阪大
    • Year and Date
      2007-10-29
  • [Presentation] Lawson予想と戸田方程式2007

    • Author(s)
      R. Miyaoka
    • Organizer
      東北大幾何セミナー
    • Place of Presentation
      東北大学
    • Year and Date
      2007-10-09
  • [Presentation] Geometry of G_2 orbits2007

    • Author(s)
      R. Miyaoka
    • Organizer
      GEOMETRY and QUANTIZATION
    • Place of Presentation
      Steklov Institute, Moscow
    • Year and Date
      2007-09-17
  • [Presentation] The Gauss map of pseudo-Algebraic Minimal Surfaces2007

    • Author(s)
      R. Miyaoka
    • Organizer
      Third Russian-German Geometry Meeting dedicated to 95th birthday of A. D. Alexandrov
    • Place of Presentation
      Steklov Institute, St. Petersburg
    • Year and Date
      2007-06-18
  • [Presentation] The Gauss map of algebraic minimal surfaces2007

    • Author(s)
      R. Miyaoka
    • Organizer
      Geometry of Holomorphic and Algevraic Curves in Complex Algebraic Varieties
    • Place of Presentation
      Centre de Recherches Math\'ematiques, Montreal
    • Year and Date
      2007-04-30
  • [Book] From Quantum Cohomology to Integrable Systems2008

    • Author(s)
      M. Guest
    • Total Pages
      305
    • Publisher
      Oxford Univ. Press

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Published: 2010-02-04   Modified: 2016-04-21  

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