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2010 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  東北大学, 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軌道の幾何学 / 運動量写像 / 離散化 / 可積分な運動 / 離散変形KdV方程式 / Ricci soliton / tt*戸田格子 / ミラー対称性
Research Abstract

研究目的にあげた3つの事柄に対してそれぞれ以下の結果を得た.
(I)宮岡はG2軌道の幾何を明らかにし,また次数4のCartan-Muenzner多項式をすべて運動量写像で表した.OT-FKM型のときは,スピン作用を用いて等質,非等質共通に議論でき,可積分性との対応の手がかりを得た.大仁田は複素2次超曲面の閉極小ラグランジュ部分多様体の安定性を判定した.石川はフレーム付き曲線を微分式系の積分曲線として捉え,余次元公式および双対性公式を発見した.田丸は低次元で,非コンパクト型対称空間への余等質1作用を分類した.川久保は5次元空間形に螺旋でないKirchhoff弾性棒を無限個構成した.長友は複素射影空間どうしのある調和写像を分類し、剛性定理とモジュライ空間を得た.Rossmanはリー球面幾何学により、線形Weingarten曲面とOmega曲面の対応を示した.梅原・山田は波面の内的定式化として連接接束・フロント束の概念を導入し双対性の共形平坦リーマン多様体への応用と,ガウス・ボンネ型公式を得た.梅原は3次元球面の平坦曲面の剛性定理を示した.
(II)藤岡は曲面の可積分な運動に対し、複素化された球面内の曲面の複素直交網による径数付けの概念を導入した.松浦-梶原は離散変形KdV方程式により離散的に運動する平面離散曲線に対して、その明示公式を与えた。中屋敷はシューア関数の微分に関する性質を用いてリーマン面のタウ関数やシグマ関数の微分に関する性質を導き出した。
(III)二木はコンパクトなshrinking Ricci solitonの直径をuniversalな定数で下から評価した.西納はCalabi-Yau多様体上の正則曲線を、特異アファイン多様体上のグラフとして数え上げ,wall crossing formulaに現れるwallを、境界付き正則曲線のモジュライとして実現した。Guestは射影空間の量子コホモロジーによるToda格子の解の存在を証明し,その一般化としてtt*-Toda格子を導入した.入谷は量子コホモロジーの整構造が量子Lefschetzと整合的であることを示し,Batyrevミラーに対するHodge理論的ミラー対称性が整構造付きで成り立つことを示した.

  • Research Products

    (59 results)

All 2011 2010

All Journal Article (50 results) (of which Peer Reviewed: 44 results) Presentation (9 results)

  • [Journal Article] Geometry of G2 orbits and isoparametric hypersurfaces2011

    • Author(s)
      Reiko Miyaoka
    • Journal Title

      Nagoya Math.J.

      Volume: 203(To appear)

    • Peer Reviewed
  • [Journal Article] Generic bifurcations of framed curves in a space form and their envelopes2011

    • Author(s)
      Goo Ishikawa
    • Journal Title

      Topology and its Applications

      Volume: (未定,To appear)

    • Peer Reviewed
  • [Journal Article] On hyperelliptic abelian functions of genus 32011

    • Author(s)
      Atsushi Nakayashiki
    • Journal Title

      J.Geom.

      Volume: (未定,To appear)

    • Peer Reviewed
  • [Journal Article] Baker-Akhiezer modules on intersections of shifted theta divisors2011

    • Author(s)
      Atsushi Nakayashiki
    • Journal Title

      Publ.RIMS

      Volume: 47(To appear)

    • Peer Reviewed
  • [Journal Article] Differential geometry of Lagrangian submanifolds and Hamiltonian variational problems2011

    • Author(s)
      Yoshihiro Ohnita
    • Journal Title

      Contemporay Mathematics

      Volume: (未定,To appear)

    • Peer Reviewed
  • [Journal Article] Hilbert series and obstructions to asymptotic semistability2011

    • Author(s)
      Akito Futaki
    • Journal Title

      Advances in Math.

      Volume: 226 Pages: 254-284

    • Peer Reviewed
  • [Journal Article] Constructing Kaehler-Ricci solitons from Sasaki-Einstein manifolds2011

    • Author(s)
      Akito Futaki
    • Journal Title

      Asian Journal of Mathematics

      Volume: 15 Pages: 33-52

    • Peer Reviewed
  • [Journal Article] Multiplier ideal sheaves and geometric problems2011

    • Author(s)
      Akito Futaki
    • Journal Title

      Variational Problems in Differential Geometry (Leeds 2009)

      Volume: (未定,To appear)

    • Peer Reviewed
  • [Journal Article] Einstein metrics and GIT stability2011

    • Author(s)
      Akito Futaki
    • Journal Title

      Sugaku Expositions

      Volume: (未定,To appear)

    • Peer Reviewed
  • [Journal Article] Motion and Baecklund transformations of discrete Diane curves2011

    • Author(s)
      Kenji Kajiwara, Nozomu Matsuura
    • Journal Title

      Kyushu Journal of Mathematics

      Volume: (未定,To appear)

    • Peer Reviewed
  • [Journal Article] Triviality of the dressing isotropy for a Smyth-type potential and nonclosing of the resulting CMC surfaces2011

    • Author(s)
      Wayne Rossman
    • Journal Title

      lasi proceedings

      Volume: (未定,To appear)

    • Peer Reviewed
  • [Journal Article] Corresponding constant mean curvature surfaces in hyperbolic and Euclidean 3-spaces2011

    • Author(s)
      Wayne Rossman
    • Journal Title

      Pacific J.Applied Math.

      Volume: (未定,To appear)

    • Peer Reviewed
  • [Journal Article] Bilinearization and special solutions to the discrete Schwarzian KdV equation2011

    • Author(s)
      Kenji Kajiwara
    • Journal Title

      Journal of Math-for-Industry

      Volume: 3 Pages: 53-62

    • Peer Reviewed
  • [Journal Article] Semi-discrete modified KdV方程式と平面離散曲線の時間発展2011

    • Author(s)
      梶原健司
    • Journal Title

      九州大学応用力学研究所研究集会報告

      Volume: (未定,To appear)

    • Peer Reviewed
  • [Journal Article] Parabolic subgroups of semisimple Lie groups and Einstein solvmanifolds2011

    • Author(s)
      Hiroshi Tamaru
    • Journal Title

      Math.Ann.

      Volume: (未定,To appear)

    • Peer Reviewed
  • [Journal Article] Applications of a completeness lemma in minimal surface theory to various classes of surfaces2011

    • Author(s)
      Masaaki Umehara, Kotaro Yamada
    • Journal Title

      Bulletin of the London Mathematical Society

      Volume: 43 Pages: 191-199

    • Peer Reviewed
  • [Journal Article] The duality of conformally flat manifolds2011

    • Author(s)
      Masaaki Umehara, Kotaro Yamada
    • Journal Title

      Bulletin of the Brasilian Mathematical Society

      Volume: 42 Pages: 131-152

    • Peer Reviewed
  • [Journal Article] Kirchhoff elastic rods in higher-dimensional space forms2011

    • Author(s)
      Sstoru Kawakubo
    • Journal Title

      Proc.Japan Acad.Ser.A Math.Sci.

      Volume: 87 Pages: 5-9

    • Peer Reviewed
  • [Journal Article] 5次元空間形内の螺旋でないKirchhoff弾性棒2011

    • Author(s)
      川久保哲
    • Journal Title

      福岡大学理学集報

      Volume: 41 Pages: 1-6

    • Peer Reviewed
  • [Journal Article] Ruan's conjecture and integral structures in quantum cohomology2011

    • Author(s)
      Hiroshi Iritani
    • Journal Title

      Adv.Stud.Pure Math.

      Volume: 59 Pages: 111-166

    • Peer Reviewed
  • [Journal Article] スピン作用のモーメント写像と次数4のCartan-Muenzner多項式2010

    • Author(s)
      宮岡礼子
    • Journal Title

      Geometry and Something

      Pages: 77-96

  • [Journal Article] Homogeneity of isoparametric hypersurfaces with six principal curvatures2010

    • Author(s)
      Reiko Miyaoka
    • Journal Title

      Oberwolfach Report

      Volume: 21 Pages: 1279-1281

  • [Journal Article] 極小曲面と変分問題2010

    • Author(s)
      宮岡礼子
    • Journal Title

      数理科学

      Volume: 568 Pages: 30-36

    • Peer Reviewed
  • [Journal Article] Surfaces in the complexified sphere parametrized by a complex orthogonalnet2010

    • Author(s)
      Atsushi Fujioka
    • Journal Title

      JP Journal of Geometry and Topology

      Volume: 10 Pages: 89-98

    • Peer Reviewed
  • [Journal Article] Symplectic classification of parametric complex plane curves2010

    • Author(s)
      Goo Ishikawa
    • Journal Title

      Annales Polonici Mathematici

      Volume: 99 Pages: 263-284

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

    • Author(s)
      Goo Ishikawa
    • Journal Title

      Differential Geometry and its Applications

      Volume: 28 Pages: 341-354

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

    • Author(s)
      Atsushi Nakayashiki
    • Journal Title

      Asian J.Math.

      Volume: 14 Pages: 175-212

    • Peer Reviewed
  • [Journal Article] Geometry of Lagrangian Submanifolds and Isoparametric Hypersurfaces2010

    • Author(s)
      Y.Ohnita
    • Journal Title

      Proc.of The 14-th International Workshop on Differential Geometry and Related Fields

      Volume: 14 Pages: 43-67

  • [Journal Article] Harmonic Maps of Surfaces and Integrable System Approach2010

    • Author(s)
      Yoshihiro Ohnita
    • Journal Title

      数理解析研究所講究録

      Volume: 1720 Pages: 1-17

  • [Journal Article] Toric Sasaki-Einstein Geometry2010

    • Author(s)
      Akito Futaki
    • Journal Title

      Fourth International Congress of Chinese Mathematicians

      Volume: 48 Pages: 107-125

    • Peer Reviewed
  • [Journal Article] Momentum construction on Ricci-flat K¥"ahler cones2010

    • Author(s)
      Akito Futaki
    • Journal Title

      Tohoku Math.J.

      Volume: 63 Pages: 21-40

    • Peer Reviewed
  • [Journal Article] Multiplier ideal sheaves and integral invariants on toric Fano manifolds2010

    • Author(s)
      Akito Futaki
    • Journal Title

      online in Mathematische Annalen

      Volume: ((on line)(on line))

    • Peer Reviewed
  • [Journal Article] A note on the topology and geometry of F_412010

    • Author(s)
      Yasuyuki Nagatomo
    • Journal Title

      Rendiconti di Matematica e sue Applicazioni

      Volume: 30 Pages: 183-193

    • Peer Reviewed
  • [Journal Article] Harmonic maps into Grassmannians and a generalization of de Carmo-Wallach theorem2010

    • Author(s)
      Yasuyuki Nagatomo
    • Journal Title

      16th OCU International Academic Symposium 2008

      Volume: 3 Pages: 41-52

    • Peer Reviewed
  • [Journal Article] A discrete analogue of the affine Baecklund transformation2010

    • Author(s)
      Nozomu Matsuura
    • Journal Title

      Fukuoka university science reports

      Volume: 40 Pages: 163-173

    • Peer Reviewed
  • [Journal Article] Lie geometry of flat fronts in hyperbolic space2010

    • Author(s)
      Wayne Rossman
    • Journal Title

      Comptes Rendus, C.R.Acad.Sci.Paris

      Volume: 348 Pages: 661-664

    • Peer Reviewed
  • [Journal Article] Holomorphic representation of constant mean curvature surfaces in Minkowski space : consequences of noncompactness in loop group methods2010

    • Author(s)
      Wayne Rossman
    • Journal Title

      Adv.Math.

      Volume: 223 Pages: 949-986

    • Peer Reviewed
  • [Journal Article] The tt* structure of the quantum cohomology of CP1 from the viewpoint of differential geometry2010

    • Author(s)
      Wayne Rossman
    • Journal Title

      Asian J.Math.

      Volume: 14 Pages: 417-437

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

    • Author(s)
      Wayne Rossman
    • Journal Title

      Kyushu J.Math.

      Volume: 64 Pages: 169-180

    • Peer Reviewed
  • [Journal Article] Discrete constant mean curvature surfaces via conserved quantities2010

    • Author(s)
      Wayne Rossman
    • Journal Title

      MI Lecture Note Series

      Volume: 25 Pages: 1-130

    • Peer Reviewed
  • [Journal Article] The discrete potential Boussinesq equation and its multisoliton solutions2010

    • Author(s)
      Kenji Kajiwara
    • Journal Title

      Applicable Anaylsis

      Volume: 89 Pages: 593-609

    • Peer Reviewed
  • [Journal Article] Projective reduction of the discrete Painleve system of type (A_2+A_1)^{(1)}2010

    • Author(s)
      Kenji Kajiwara
    • Journal Title

      Int.Math.Res.Notices

      Volume: 10.1093 Pages: imrn/rnq089

    • Peer Reviewed
  • [Journal Article] Hyperpolar homogeneous foliations on symmetric spaces of noncompact type2010

    • Author(s)
      Hiroshi Tamaru
    • Journal Title

      J.Differential Geom.

      Volume: 86 Pages: 191-235

    • Peer Reviewed
  • [Journal Article] 非コンパクト対称空間への良い作用の構成法2010

    • Author(s)
      田丸博士
    • Journal Title

      部分多様体幾何とリー群作用

      Pages: 39-48

  • [Journal Article] Homogeneous submanifolds in noncompact symmetric spaces2010

    • Author(s)
      Hiroshi Tamaru
    • Journal Title

      Proc.14th International Workshop on Diff.Geom.

      Volume: 14 Pages: 111-144

  • [Journal Article] The duality between singular points and inflection points on wave fronts2010

    • Author(s)
      Masaaki Umehara, Kotaro Yamada
    • Journal Title

      Osaka Journal of Mathematics

      Volume: 47 Pages: 591-607

    • Peer Reviewed
  • [Journal Article] Singularities of Blaschke normal maps of convex surfaces2010

    • Author(s)
      Masaaki Umehara, Kotaro Yamada
    • Journal Title

      Comptes Reudus de I'Academie Sciences. Serie I.Mathematique

      Volume: 348 Pages: 665-668

    • Peer Reviewed
  • [Journal Article] A simplification of the proof of Bol's conjecture on sextactic points2010

    • Author(s)
      Masaaki Umehara
    • Journal Title

      Proc.Japan Acad.Ser.A

      Volume: 87 Pages: 10-12

    • Peer Reviewed
  • [Journal Article] Differential equations aspects of quantum cohomology2010

    • Author(s)
      Martin Guest
    • Journal Title

      Geometric and topological methods for quantum field theory

      Volume: (未定) Pages: 54-85

    • Peer Reviewed
  • [Journal Article] 3次元空間形内の局所誘導階層について2010

    • Author(s)
      川久保哲
    • Journal Title

      福岡大学理学集報

      Volume: 40 Pages: 155-161

    • Peer Reviewed
  • [Presentation] カルタン・ミュンツナー多項式とモーメント写像2011

    • Author(s)
      宮岡礼子
    • Organizer
      等径超曲面と幾何構造
    • Place of Presentation
      名城大学
    • Year and Date
      2011-03-08
  • [Presentation] Moment maps of the spin action and the Cartan-Muenzner polynomials of degree four2011

    • Author(s)
      Reiko Miyaoka
    • Organizer
      Spanish-Japanese workshop on Differential Geometry
    • Place of Presentation
      Granada大学,グラナダ,スペイン
    • Year and Date
      2011-02-18
  • [Presentation] Moment maps of the spin action and the Cartan-Muenzner polynomials of degree four2011

    • Author(s)
      Reiko Miyaoka
    • Organizer
      Differential Geometry and Tanaka Theory
    • Place of Presentation
      RIMS
    • Year and Date
      2011-01-26
  • [Presentation] スピン作用のモーメント写像と次9のCartan-M¥"unzner多項式2010

    • Author(s)
      宮岡礼子
    • Organizer
      Geometry and Something
    • Place of Presentation
      福岡大学セミナーハウス
    • Year and Date
      2010-10-10
  • [Presentation] Recent development of hypersurface geometry", R.Miyaoka2010

    • Author(s)
      Reiko Miyaoka
    • Organizer
      Colloquium talk
    • Place of Presentation
      復旦大学,上海,中国
    • Year and Date
      2010-09-10
  • [Presentation] Transnormal functions and isoparametric hypersurfaces2010

    • Author(s)
      Reiko Miyaoka
    • Organizer
      6-th Geometry Conference for friendship between China and Japan
    • Place of Presentation
      西北大学,西安,中国
    • Year and Date
      2010-09-04
  • [Presentation] Isoparametric Hypersurfaces with (g,m)=(6,2)2010

    • Author(s)
      Reiko Miyaoka
    • Organizer
      Hypersurface Geometry and Integrable Systems
    • Place of Presentation
      東北大学
    • Year and Date
      2010-08-24
  • [Presentation] Singular Riemannian foliations and transnormal functions2010

    • Author(s)
      宮岡礼子
    • Organizer
      北大談話会
    • Place of Presentation
      北海道大学
    • Year and Date
      2010-07-16
  • [Presentation] Isoparametric Hypersurfaces with (g,m)=(6,2)2010

    • Author(s)
      Reiko Miyaoka
    • Organizer
      Progress in Surface Theory
    • Place of Presentation
      Oberwolfach Mathematics Institute,ドイツ
    • Year and Date
      2010-05-02

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Published: 2012-07-19  

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