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2014 Fiscal Year Annual Research Report

Klein群および複素力学系の退化とその特異性の解析

Research Project

Project/Area Number 22340028
Research InstitutionTokyo Institute of Technology

Principal Investigator

志賀 啓成  東京工業大学, 理工学研究科, 教授 (10154189)

Co-Investigator(Kenkyū-buntansha) 相川 弘明  北海道大学, 理学(系)研究科(研究院), 教授 (20137889)
宍倉 光広  京都大学, 理学(系)研究科(研究院), 教授 (70192606)
須川 敏幸  東北大学, 情報科学研究科, 教授 (30235858)
足利 正  東北学院大学, 工学部, 教授 (90125203)
大鹿 健一  大阪大学, 理学(系)研究科(研究院), 教授 (70183225)
Project Period (FY) 2010-04-01 – 2015-03-31
KeywordsKlein群 / リーマン面 / タイヒミュラー空間 / 複素力学系 / 複素解析 / 国際研究者交流 / 国際情報交換 / 多国籍
Outline of Annual Research Achievements

志賀は, Teichmuller曲線について研究し,その剛性と有限性について新しい結果を得た.さらにTeichmuller空間のthick partのgeometry,特にその凸性について新たな知見を得た.また,一般のRiemann面上の種々の調和関数の空間から定義される不変距離の値の評価及び完備性について,Riemann面のポテンシャル論的性質から考察した.
相川は, 一般領域のDirichlet最小固有値を容量的幅を用いて評価した.また,集合のCapacityに関する密度を考察し,密度をとる球の半径が大きくなったときの極限は0か1しかないことを導いた.
宍倉は, 複素力学系が吸引的周期点やSiegel円盤,Herman円環をもつときに,新たに樹木とその上の区分的線型写像を導入し,手術による複素力学系の構成や,与えられた配置を実現する有理関数の次数の評価などを行った.
須川は, 双曲計量と球面幾何を用いてリーマン球面内のコンパクト集合が一様完全であるための新たな特徴付けをみつけた.また,リーマン球面から有限個の点を抜いたリーマン面の双曲距離の評価を行った.
足利は, アイヒラー跡公式のvariation 等を用いて, 種数3の堀川指数の明示問題を進展させた。
大鹿は, 指標多様体についてW. Jeon, I. Kim, C. Lecuireと共同で,変形空間の全ての点が閉多様体に対応する外点の集積点となることを示した.またKlein群の極限集合のP-S測度について,W. Jeonと共同で同型なKlein群は等角共役でない限り,Cannon-Thurston写像によってP-S測度は互いに特異的になることを示した.

Research Progress Status

26年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

26年度が最終年度であるため、記入しない。

  • Research Products

    (42 results)

All 2015 2014

All Journal Article (11 results) (of which Peer Reviewed: 11 results,  Acknowledgement Compliant: 1 results) Presentation (31 results) (of which Invited: 29 results)

  • [Journal Article] Dichotomy of global capacity density2015

    • Author(s)
      H. Aikawa and T. Itoh
    • Journal Title

      Proc. Amer. Math. Soc.

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] Intrinsic ultracontractivity via capacitary width2015

    • Author(s)
      H. Aikawa
    • Journal Title

      Rev. Mat. Iberoamericana

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] Toric modifications of cyclic orbifolds and an extended Dedekind sums2015

    • Author(s)
      T.Ashikaga
    • Journal Title

      Tohoku Math. J.

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] Holomorphic families of Riemann surfaces and monodromy2014

    • Author(s)
      H. Shiga
    • Journal Title

      Handbook of Teichmuller Theory, European Mathematical Society

      Volume: IV Pages: 439-460

    • DOI

      10.4171/117-1/12

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Convex hull of set in thick part of Teichmuller space2014

    • Author(s)
      L. Lui, H. Shiga and Z. Sun
    • Journal Title

      Science China Math.

      Volume: 57 Pages: 1799-1810

    • DOI

      10.1007/s11425-014-4871-6

    • Peer Reviewed
  • [Journal Article] Variability regions of close-to-convex functions2014

    • Author(s)
      Takao Kato, Toshiyuki Sugawa and Li-Mei Wang
    • Journal Title

      Ann. Polon. Math.

      Volume: 111 Pages: 89-105

    • DOI

      10.4064/ap111-1-7

    • Peer Reviewed
  • [Journal Article] Radius problems associated with pre-Schwarzian and Schwarzian derivatives2014

    • Author(s)
      S. Ponnusamy, S. K. Sahoo and T. Sugawa
    • Journal Title

      Analysis

      Volume: 34 Pages: 163-171

    • DOI

      10.1515/anly-2012-1219

    • Peer Reviewed
  • [Journal Article] Primitive stable representations of free Kleinian groups2014

    • Author(s)
      W. Jeon, I. Kim, K. Ohshika and C. Lecuire
    • Journal Title

      Israel J. Math.

      Volume: 199-2 Pages: 841-866

    • DOI

      10.1007/s11856-013-0062-3

    • Peer Reviewed
  • [Journal Article] Primitive stable closed hyperbolic 3-manifolds2014

    • Author(s)
      I. Kim, C. Lecuire and K. Ohshika
    • Journal Title

      Topology Appl.

      Volume: 172 Pages: 68-71

    • DOI

      10.1016/j.topol.2014.05.003

    • Peer Reviewed
  • [Journal Article] Compactifications of Teichmuller spaces2014

    • Author(s)
      K. Ohshika
    • Journal Title

      Handbook of Teichmuller theory, IRMA, EMS

      Volume: IV Pages: 235-254

    • DOI

      10.4171/117-1/6

    • Peer Reviewed
  • [Journal Article] Weil-Petersson Funk metric on Teichmuller space2014

    • Author(s)
      H. Miyachi, K. Ohshika and S. Yamada
    • Journal Title

      Handbook of Hilbert geometry, IRMA EMS

      Volume: 22 Pages: 339-352

    • DOI

      10.4171/147-1/12

    • Peer Reviewed
  • [Presentation] Klein群の変形空間について2015

    • Author(s)
      H. Shiga
    • Organizer
      日本数学会年会(特別講演)
    • Place of Presentation
      明治大学駿河台キャンパス(東京都千代田区)
    • Year and Date
      2015-03-23
    • Invited
  • [Presentation] Construction of a domain which fails to satisfy the global boundary Harnack principle with the aid of the Helmholtz equation2015

    • Author(s)
      相川弘明
    • Organizer
      日本数学会年会
    • Place of Presentation
      明治大学駿河台キャンパス(東京都千代田区)
    • Year and Date
      2015-03-23
  • [Presentation] 連分数と力学系のくりこみ2015

    • Author(s)
      宍倉光広
    • Organizer
      日本数学会年会(企画特別講演)
    • Place of Presentation
      明治大学駿河台キャンパス(東京都千代田区)
    • Year and Date
      2015-03-23
    • Invited
  • [Presentation] 種数3のファイバー芽の堀川指数とアイヒラー型跡公式2015

    • Author(s)
      足利 正
    • Organizer
      第2回代数幾何学研究集会-宇部
    • Place of Presentation
      宇部高専(山口県宇部市)
    • Year and Date
      2015-01-24
    • Invited
  • [Presentation] 種数3のモジュライ空間上のある交点数と堀川指数2015

    • Author(s)
      足利 正
    • Organizer
      代数幾何学ミニワークショップ
    • Place of Presentation
      Edel Sasayuri(兵庫県多可町)
    • Year and Date
      2015-01-10
    • Invited
  • [Presentation] Hyperbolic 3-manifolds and the Schottky space viewed as lying in the character variety2014

    • Author(s)
      K. Ohshika
    • Organizer
      Group Action Forum 2014
    • Place of Presentation
      Tsinghua-Sanya International Mathematics Forum, Sanya, Hainan, China
    • Year and Date
      2014-12-16
    • Invited
  • [Presentation] Complex analytic properties of deformation spaces of Kleinian groups I2014

    • Author(s)
      H. Shiga
    • Organizer
      低次元多様体モジュライ空間の幾何学
    • Place of Presentation
      京都大学数理科学研究所(京都府京都市左京区)
    • Year and Date
      2014-12-11
    • Invited
  • [Presentation] Complex analytic properties of deformation spaces of Kleinian groups II2014

    • Author(s)
      H. Shiga
    • Organizer
      低次元多様体モジュライ空間の幾何学
    • Place of Presentation
      京都大学数理科学研究所(京都府京都市左京区)
    • Year and Date
      2014-12-11
    • Invited
  • [Presentation] Dichotomy of global capacity density2014

    • Author(s)
      H. Aikawa
    • Organizer
      The 10th HU and SNU Symposium on Mathematics - Recent progress on theory of probability and partial differential equations
    • Place of Presentation
      Hokkaido University(北海道札幌市北区)
    • Year and Date
      2014-11-28
    • Invited
  • [Presentation] An application of the Loewner theory to trivial Beltrami coefficients2014

    • Author(s)
      Toshiyuki Sugawa
    • Organizer
      International Workshop on Conformal Dynamics and Loewner Theory
    • Place of Presentation
      Tokyo Institute of Technology(東京都目黒区)
    • Year and Date
      2014-11-22
    • Invited
  • [Presentation] Unified approach to elliptic and parabolic boundary Harnack principles I and II2014

    • Author(s)
      H. Aikawa
    • Organizer
      Workshop on Nonlinear PDE
    • Place of Presentation
      Tohoku University(宮城県仙台市青葉区)
    • Year and Date
      2014-11-13 – 2014-11-14
    • Invited
  • [Presentation] Continuous deformation of geometric limits and the Maskit combination spaces2014

    • Author(s)
      K. Ohshika
    • Organizer
      Atelier de travail franco-japonais sur la geometrie des groupes modulaire et des espaces de Teichmuller
    • Place of Presentation
      大阪大学(大阪府豊中市)
    • Year and Date
      2014-10-17
    • Invited
  • [Presentation] Geometry of Kleinian groups and its applications,2014

    • Author(s)
      K. Ohshika
    • Organizer
      MSJ Autumn meeting, plenary address
    • Place of Presentation
      広島大学(広島県東広島市)
    • Year and Date
      2014-09-26
    • Invited
  • [Presentation] Averaging property of capacity2014

    • Author(s)
      相川弘明,伊藤翼
    • Organizer
      日本数学会2014年度秋季総合分科会
    • Place of Presentation
      広島大学(広島県東広島市)
    • Year and Date
      2014-09-25
  • [Presentation] Conformal invariants defined by harmonic functions on Riemann surfaces2014

    • Author(s)
      H. Shiga
    • Organizer
      Confrence of Potential theory
    • Place of Presentation
      福山大学宮地茂記念館(広島県福山市)
    • Year and Date
      2014-09-04
    • Invited
  • [Presentation] Some topics in probabilistic potential theory2014

    • Author(s)
      相川弘明
    • Organizer
      2014年度ポテンシャル論研究集会
    • Place of Presentation
      福山大学宮地茂記念館(広島県福山市)
    • Year and Date
      2014-09-04
    • Invited
  • [Presentation] Intrinsic ultracontractivity and capacitary width2014

    • Author(s)
      H. Aikawa
    • Organizer
      Stochastic Processes, Analysis and Mathematical Physics, in Honor of Professor Masatoshi Fukushima's Sanju
    • Place of Presentation
      Kansai University(大阪府吹田市)
    • Year and Date
      2014-08-25
    • Invited
  • [Presentation] Horikawa index of genus 3 with periodic monodromy via Eicjler's trace formula2014

    • Author(s)
      T. Ashikaga
    • Organizer
      リーマン面に関する位相幾何学2014
    • Place of Presentation
      東京大学駒場キャンパス(東京都目黒区)
    • Year and Date
      2014-08-25
    • Invited
  • [Presentation] Tropical Complex Dynamics2014

    • Author(s)
      宍倉光広
    • Organizer
      ICM Satellite Conference on Holomorphic Dynamics
    • Place of Presentation
      Kolon Hotel Gyeongju (慶州), South Korea
    • Year and Date
      2014-08-23
    • Invited
  • [Presentation] Teichmuller curves and holomorphic maps on Riemann surfaces2014

    • Author(s)
      H. Shiga
    • Organizer
      Geometry on Groups and Spaces, ICM Satellite Conference on Geometric Group Theory & Geometric Structures
    • Place of Presentation
      KAIST, Daejeon, Korea
    • Year and Date
      2014-08-09
    • Invited
  • [Presentation] Extended Harnack inequalities with exceptional sets and its applications2014

    • Author(s)
      H. Aikawa
    • Organizer
      The 22nd International Conference on Finite or Infinite Dimensional Complex Analysis and Applications
    • Place of Presentation
      Dongguk University, Gyeongju, Korea
    • Year and Date
      2014-08-09
    • Invited
  • [Presentation] Extremal problems for close-to-convex functions2014

    • Author(s)
      Toshiyuki Sugawa
    • Organizer
      22nd ICFIDCAA
    • Place of Presentation
      Dongguk University, Korea
    • Year and Date
      2014-08-08
    • Invited
  • [Presentation] Intrinsic ultracontractivity and the boundary Harnack principle2014

    • Author(s)
      H. Aikawa
    • Organizer
      7th International Conference on Stochastic Analysis and its Applications
    • Place of Presentation
      Seoul National University, Seoul, Korea
    • Year and Date
      2014-08-06
    • Invited
  • [Presentation] Hyperbolic metric with conic singularities on Riemann surfaces and its applications2014

    • Author(s)
      Toshiyuki Sugawa
    • Organizer
      Workshop on Complex Geometry
    • Place of Presentation
      University of Hong Kong, Hong Kong, China
    • Year and Date
      2014-07-29
    • Invited
  • [Presentation] Intrinsic ultracontractivity and the boundary Harnack principle2014

    • Author(s)
      相川弘明
    • Organizer
      第107回熊本大学応用解析セミナー
    • Place of Presentation
      熊本大学大学院自然科学研究科黒髪南キャンパス(熊本市中央区)
    • Year and Date
      2014-07-26
    • Invited
  • [Presentation] Variability regions of log[f(z)/z] for a class of univalent functions with application to some extremal problems2014

    • Author(s)
      Toshiyuki Sugawa
    • Organizer
      Workshop on Analytic Functions and Applied Mathematics
    • Place of Presentation
      University of Rzeszow, Poland
    • Year and Date
      2014-07-04
    • Invited
  • [Presentation] A note on trivial Beltrami coefficients2014

    • Author(s)
      Toshiyuki Sugawa
    • Organizer
      XVII-th Conference on Analytic Functions and Related Topics
    • Place of Presentation
      The State School of Higher Education in Chelm, Poland
    • Year and Date
      2014-06-30
    • Invited
  • [Presentation] On analytic properties of deformation spaces of Kleinian groups2014

    • Author(s)
      H. Shiga
    • Organizer
      XVII th Conference on Analytic Functions and Related Topics
    • Place of Presentation
      Institute of Mathematics and Computer Science of the State School of Higher Education in Chelm, Poland
    • Year and Date
      2014-06-29
    • Invited
  • [Presentation] Intrinsic ultracontractivity and the boundary Harnack principle2014

    • Author(s)
      相川弘明
    • Organizer
      第16回金沢解析セミナー
    • Place of Presentation
      金沢大学自然科学5号館(石川県金沢市)
    • Year and Date
      2014-06-27
    • Invited
  • [Presentation] Thurston’s theorems in complex dynamics2014

    • Author(s)
      宍倉光広
    • Organizer
      What’s Next? The mathematical legacy of Bill Thurston
    • Place of Presentation
      Cornell University, Ithaca, NY, USA
    • Year and Date
      2014-06-26
    • Invited
  • [Presentation] The work of Thurston on Kleinian groups, (4 talks)2014

    • Author(s)
      K. Ohshika
    • Organizer
      Master Class : Around Thurston-Grothendieck-Teichmuller theories
    • Place of Presentation
      IRMA, Strasbourg, France
    • Year and Date
      2014-05-12 – 2014-05-15
    • Invited

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Published: 2016-06-01   Modified: 2023-03-16  

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