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2009 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) 小谷 元子  東北大学, 大学院・理学研究科, 教授 (50230024)
大仁田 義裕  大阪市立大学, 大学院・理学研究科, 教授 (90183764)
Keywords超曲面の幾何学 / 可積分系 / 量子コホモロジー / パンルヴェ方程式 / 特異点 / 離散幾何学 / 双曲空間 / クレパント解消予想
Research Abstract

宮岡は等径超曲面の分類問題においてg=6を解決し,更にg=4の残る分類問題にも取り組んだ.藤岡は中心アファイン(極小)曲面について考察し,また曲線の可積分な運動についてシンプレクティック、リーマン幾何的な考察をした。梅原,山田は特異点をもつ曲面の微分幾何学の基礎理論を進展させた.また平坦フロントの弱完備なエンドの漸近挙動を解析した.庄田は極小局面のモデュライの解明を行った.RossmanはLie球幾何を曲面論に用いた.田丸は,非コンパクト型対称空間へのcohomogeneity one作用を構成する新しい方法と,既存のものをあわせ全ての構成法を示した.大仁田は球面の等径超曲面から得られる複素2次超曲面内の極小ラグランジュ部分多様体のハミルトン安定性、剛性、マスロフ数について新しい結果を得た。石川は境界付き曲面を平坦曲面に拡張するときに現れる特異点を曲面上の曲線の基本不変量で特徴付けた.また旗多様体上のカルタン分布に対する特異性の双対性を考察した.中屋敷は主偏極アーベル多様体のある種の部分多様体のアフィン環を行列係数の偏微分作用素環に埋め込めることを証明した。西納は旗多様体上のGelfand-Cetlin可積分系のトーリック退化を構成し,旗多様体のスーパーポテンシャルを計算した。二木は自己同型群が非自明の場合,ケーラー・アインシュタイン計量を持つが漸近的チャウ半安定ではない例を示した.Guestは調和束(harmonic bundle)、tt*-幾何学と曲面論の研究により量子コホモロジーとの関連を指摘した.小谷は離散幾何解析学の物性物理への応用を目指し,グラフ理論によるネットワークのスペクトル解析,非可換幾何学による量子ホール効果,流体力学極限による相分離現象の解明を研究した.入谷は量子コホモロジーの整構造がアーベル・非アーベル対応のもとでうまく振る舞うことを示し,高種数Gromov-Witten理論のモジュラー性を証明した.長友は対称空間のベクトル束から得た等径関数とそのラドン変換について新しい結果を得た.

  • Research Products

    (46 results)

All 2010 2009

All Journal Article (33 results) (of which Peer Reviewed: 31 results) Presentation (10 results) Book (3 results)

  • [Journal Article] Centroaffine minimal surfaces whose centroaffine curvature and Pick function are constants2010

    • Author(s)
      A.Fujioka
    • Journal Title

      J.of Math.Analysis and Applications 365

      Pages: 694-700

    • Peer Reviewed
  • [Journal Article] Singularities of flat extensions from generic surfaces with boundaries2010

    • Author(s)
      Goo Ishikawa
    • Journal Title

      Differential Geometry and its Application (To appear)

    • Peer Reviewed
  • [Journal Article] On Algebraic expressions of sigma functions for(n, s)curves2010

    • Author(s)
      A.Nakayashiki
    • Journal Title

      Asian J.Math (To appear)

    • Peer Reviewed
  • [Journal Article] Sigma function as a tau function2010

    • Author(s)
      A.Nakayashiki
    • Journal Title

      Int.Math.Res.Not. 2010-3

      Pages: 373-394

    • Peer Reviewed
  • [Journal Article] Convergence of adiabatic family of anti-self-dual connections on products of Riemann surfaces2010

    • Author(s)
      T.Nishinou
    • Journal Title

      J.Math.Phys 51

      Pages: doi : 10.1063/1.3318164

    • Peer Reviewed
  • [Journal Article] Toric Degeneration of Flag Manifolds and Gelfand-Cetlin Systems2010

    • Author(s)
      T.Nishinou, Y.Nohara, K.Ueda
    • Journal Title

      Advances in Mathematics 224

      Pages: 648-706

    • Peer Reviewed
  • [Journal Article] Isothermicity for discrete surfaces in the Euclidean and Minkowski 3-spaces2010

    • Author(s)
      Y.Kinoshita, W.Rossman
    • Journal Title

      Proc.Of the 16th OCU International Academic Symposium 2008 3(To appear)

    • Peer Reviewed
  • [Journal Article] Holomorphic Representation of Constant Mean Curvature Surfaces in Minkowski Space2010

    • Author(s)
      D.Brander, W.Rossman, N.Schmitt
    • Journal Title

      Adv.Math. (To appear)

    • Peer Reviewed
  • [Journal Article] Higher genus mean curvature 1 catenoids in hyperbolic and de Sitter 3-spaces2010

    • Author(s)
      S.Fujimori, W.Rossman
    • Journal Title

      Kyushu Math.J. (To appear)

    • Peer Reviewed
  • [Journal Article] Corresponding constant mean curvature surfaces in hyperbolic and Euclidean 3-spaces2010

    • Author(s)
      W.Rossman, M.Toda
    • Journal Title

      Pacific Journal of Applied Mathematics (To appear)

    • Peer Reviewed
  • [Journal Article] A note on the topology and geometry of $F_4I$2010

    • Author(s)
      R.Herrera, Y.Nagatomo
    • Journal Title

      Rendiconti di Matematica e sue Applicazioni (To appear)

    • Peer Reviewed
  • [Journal Article] The geometry of fronts2009

    • Author(s)
      K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Annals of Mathematics 169

      Pages: 491-529

    • Peer Reviewed
  • [Journal Article] Transverse Kaehler geometry of Sasaki manifolds and toric Sasaki-Einstein manifolds2009

    • Author(s)
      A.Futaki, H.Ono, G.Wang
    • Journal Title

      Journal of Differential Geometry 83

      Pages: 585-636

    • Peer Reviewed
  • [Journal Article] Centroaffine minimal surfaces with non-semisimple centroaffine Tchebychev operator2009

    • Author(s)
      A.Fujioka
    • Journal Title

      Results in Mathematics 56

      Pages: 177-195

    • Peer Reviewed
  • [Journal Article] The Dorfmeister-Neher Theorem on isoparametric hypersurfaces2009

    • Author(s)
      R.Miyaoka
    • Journal Title

      Osaka Jour.Math 46

      Pages: 695-715

    • Peer Reviewed
  • [Journal Article] Classification of isoparametric hypersurfaces ; Geometry and Something2009

    • Author(s)
      R.Miyaoka
    • Journal Title

      Geometry and Something (福岡大学)

      Pages: 16-45

  • [Journal Article] New metallic carbon crystal2009

    • Author(s)
      M.Kotani
    • Journal Title

      Phys.Rev.Lett. 102

      Pages: 055703,1-4

    • Peer Reviewed
  • [Journal Article] Geometry of the space of closed curves in the complex hyperbola2009

    • Author(s)
      A.Fujioka, T.Kurose
    • Journal Title

      Kyushu J.Math 63

      Pages: 161-165

    • Peer Reviewed
  • [Journal Article] Hamiltonian formalism for the higher KdV flows on the space of closed complex equicentroaffine curves2009

    • Author(s)
      A.Fujioka, T.Kurose
    • Journal Title

      Internat.J.of Geometric Methods in Modern Physics 7

      Pages: 165-175

    • Peer Reviewed
  • [Journal Article] Asymptotic behavior of flat surface in hyperbolic 3-space2009

    • Author(s)
      M.Kokubu, W.Rossman, M.Umehara, K.Yamada
    • Journal Title

      Journal of the Mathematical Society of Japan 61

      Pages: 799-852

    • Peer Reviewed
  • [Journal Article] Spacelike mean curvature one surfaces in de Sitter $3$-space2009

    • Author(s)
      S.Fujimori, W.Rossman, M.Umehara K.Yamada, S.-D.Yang
    • Journal Title

      Communications in Analysis and Geometgry 17

      Pages: 383-427

    • Peer Reviewed
  • [Journal Article] An example of Jacobian variety and its applications to minimal surfaces2009

    • Author(s)
      T.Shoda
    • Journal Title

      Results in Mathematics 56

      Pages: 23-39

    • Peer Reviewed
  • [Journal Article] On the space of KdV fields2009

    • Author(s)
      A.Nakayashiki
    • Journal Title

      Lett.Math.Phys. 89

      Pages: 85-100

    • Peer Reviewed
  • [Journal Article] Complete bounded holomorphic curves immersed in C^2 with arbitrary genus2009

    • Author(s)
      F.Martin, M.Umehara, K.Yamada
    • Journal Title

      Proc.Amer.Math.Soc. 137

      Pages: 3437-3450

    • Peer Reviewed
  • [Journal Article] Complete bounded null curves immersed in C^3 and PSL(2, C)2009

    • Author(s)
      F.Martin, M.Umehara, K.Yamada
    • Journal Title

      Calculus of Variations and Partial Differential Equations 36

      Pages: 119-139

    • Peer Reviewed
  • [Journal Article] A_k singularities of wave fronts2009

    • Author(s)
      K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Math.Proc.of the Cambridge Philosophical Soc. 146

      Pages: 731-746

    • Peer Reviewed
  • [Journal Article] New maximal surfaces in Minkowski 3-space with arbitrary genus and their cousins in de Sitter 3-space2009

    • Author(s)
      S.Fujimori, W.Rossman, M.Umehara K.Yamada, S.D.Yang
    • Journal Title

      Results in Math. 56

      Pages: 41-82

    • Peer Reviewed
  • [Journal Article] Asymptotic behavior of flat surfaces in hyperbolic 3-space2009

    • Author(s)
      M.Kokubu, W.Rossman, M.Umehara K.Yamada
    • Journal Title

      J.Math.Soc.Japan 61

      Pages: 799-852

    • Peer Reviewed
  • [Journal Article] On deformation of 3-dimensional certain minimal Legendrian submanifolds2009

    • Author(s)
      Y.Ohnita
    • Journal Title

      Proc.Int.Workshop on Diff.Geom.and Rel.Fields 13

      Pages: 71-87

  • [Journal Article] An integral structure in quantum cohomology and mirror symmetry for toric orbifolds.2009

    • Author(s)
      H.Iritani
    • Journal Title

      Adv.Math. 222

      Pages: 1016-1079

    • Peer Reviewed
  • [Journal Article] Wall-crossings in toric Gromov-Witten theory. I. Crepant examples2009

    • Author(s)
      T.Coates, H.Iritani, H.-H.Tseng
    • Journal Title

      Geom.Topol. 13

      Pages: 2675-2744

    • Peer Reviewed
  • [Journal Article] Computing genus-zero twisted Gromov-Witten invariants2009

    • Author(s)
      T.Coates, A.Corti, H.Iritani, H.-H.Tseng
    • Journal Title

      Duke Math.J. 146

      Pages: 377-438

    • Peer Reviewed
  • [Journal Article] Harmonic maps into Grassmannians and a generalization of de Carmo-Wallach theorem2009

    • Author(s)
      Y.Nagatomo
    • Journal Title

      Proceedings of the 16th OCU International Academic Symposium 2008 3

      Pages: 41-52

    • Peer Reviewed
  • [Presentation] 調和写像と可積分系理論から量子コホモロジーヘ2010

    • Author(s)
      R.Miyaoka
    • Organizer
      東北大学 春の学校
    • Place of Presentation
      東北大学
    • Year and Date
      20100309-20100311
  • [Presentation] Isoparametric hypersurface theory and its applications2010

    • Author(s)
      R.Miyaoka
    • Organizer
      Colloquium in WUSTL
    • Place of Presentation
      Washington U.in St.Louis(アメリカ)
    • Year and Date
      2010-03-24
  • [Presentation] Hypersurface Geometry with some applications2010

    • Author(s)
      R.Miyaoka
    • Organizer
      UK-Japan Winter School Integrable Systems and Symmetries
    • Place of Presentation
      Univ.Manchester(イギリス)
    • Year and Date
      2010-01-08
  • [Presentation] Hypersurface geometry and related topics2009

    • Author(s)
      R.Miyaoka
    • Organizer
      Colloquium in San Yat-Sen Univ.
    • Place of Presentation
      中山大学(中国)
    • Year and Date
      2009-12-08
  • [Presentation] 等径超曲面論入門2009

    • Author(s)
      R.Miyaoka
    • Organizer
      幾何セミナー
    • Place of Presentation
      首都大学東京
    • Year and Date
      2009-11-16
  • [Presentation] Isoparametric hypersurfaces with six principal curvatures2009

    • Author(s)
      R.Miyaoka
    • Organizer
      Colloquium in Peking Univ.
    • Place of Presentation
      北京大学(中国)
    • Year and Date
      2009-10-23
  • [Presentation] Kaehler and symplectic Geometry of G_2 orbits2009

    • Author(s)
      R.Miyaoka
    • Organizer
      Colloquium in Tsinghui Univ.
    • Place of Presentation
      清華大学(中国)
    • Year and Date
      2009-10-22
  • [Presentation] (g,m)=(6,2)の等径超曲面の等質性の証明(1),(2)2009

    • Author(s)
      R.Miyaoka
    • Organizer
      広島大学幾何学研究集会2009
    • Place of Presentation
      広島大学
    • Year and Date
      2009-10-09
  • [Presentation] ガウス写像の除外値問題(Nevanlinna-Galois理論へ)2009

    • Author(s)
      R.Miyaoka
    • Organizer
      幾何セミナー
    • Place of Presentation
      東北大学
    • Year and Date
      2009-07-10
  • [Presentation] 超曲面論とスペシャル幾何2009

    • Author(s)
      R.Miyaoka
    • Organizer
      談話会
    • Place of Presentation
      広島大学
    • Year and Date
      2009-05-26
  • [Book] Riemann Surfaces, Harmonic Maps and Visualization2010

    • Author(s)
      Y.Ohnita, M.Guest, R.Miyaoka, W.Rossman
    • Total Pages
      277
    • Publisher
      Osaka Municipal Universities Press
  • [Book] Probabilistic approach to geometry2010

    • Author(s)
      M.Kotani, M.Hino, T.Kumagai
    • Total Pages
      514
    • Publisher
      Advanced Studies in Pure Mathematics, Volume 57
  • [Book] Noncommutativity and Singularities2009

    • Author(s)
      J.-P.Bourguignon, M.Kotani, Y.Maeda, N.Tose
    • Total Pages
      380
    • Publisher
      Advanced Studies in Pure Mathematics, Volume 55

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Published: 2011-06-16   Modified: 2016-04-21  

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