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Various evolutions of Teichmuller theory

Research Project

Project/Area Number 18KK0071
Research Category

Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 11:Algebra, geometry, and related fields
Research InstitutionGakushuin University (2019-2024)
Osaka University (2018)

Principal Investigator

Ohshika Ken'ichi  学習院大学, 理学部, 教授 (70183225)

Co-Investigator(Kenkyū-buntansha) 北山 貴裕  東京大学, 大学院数理科学研究科, 准教授 (10700057)
河澄 響矢  東京大学, 大学院数理科学研究科, 教授 (30214646)
山崎 玲 (井上玲)  千葉大学, 大学院理学研究院, 教授 (30431901)
宮地 秀樹  金沢大学, 数物科学系, 教授 (40385480)
久野 雄介  津田塾大学, 学芸学部, 教授 (80632760)
山田 澄生  学習院大学, 理学部, 教授 (90396416)
Project Period (FY) 2018-10-09 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2022: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2021: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2020: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
KeywordsTeichmuller空間 / 写像類群 / クラスター代数 / Thurston距離 / Weil-Petersson計量 / 非対称距離 / Finsler距離 / Thurston計量 / 双曲構造 / Finsler計量 / タイヒミュラー空間 / 双曲幾何 / Thurston非対称計量 / Johnson準同型 / Teichmuller理論 / Klein群
Outline of Final Research Achievements

Based at the University of Strasbourg, we have fostered international collaboration on various aspects of Teichmuller theory. Specifically, we conducted a comprehensive study of Finsler metrics on Teichmuller spaces, including Thurston’s asymmetric metric and the earthquake metric. This study encompassed their infinitesimal structures and the behaviour of geodesics. Furthermore, we applied Teichmuller theory to the study of deformation spaces of Kleinian groups. We investigated mapping class groups from a Teichmuller perspective, particularly examining the rigidity of their actions. Additionally, we initiated a novel approach to Teichmuller theory through the use of cluster algebras. We further provided applications of Teichmuller theory to other areas of mathematics, in particular to the study of 3-manifolds and knots.

Academic Significance and Societal Importance of the Research Achievements

Teichmuller理論は数学の多くの分野に跨った理論であり,物理学の弦理論や一般相対性理論の基礎となる枠組みを与える理論でもある.本研究で得られた成果は,これまでになかった数学的手法を用いることにより,Teichmuller空間の幾何とその対称性に関する本質的な貢献と見なされる数多くの結果を含んでいる.また日本とフランスの数多くの数学者がTeichmuller理論という共通の場において協力することによりこれらの結果を得た.今後我々が得た理論が本格的に物理学などで応用されることが期待される.

Report

(8 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (84 results)

All 2025 2024 2023 2022 2021 2020 2019 2018 Other

All Int'l Joint Research (12 results) Journal Article (34 results) (of which Int'l Joint Research: 16 results,  Peer Reviewed: 34 results,  Open Access: 9 results) Presentation (36 results) (of which Int'l Joint Research: 22 results,  Invited: 29 results) Book (2 results)

  • [Int'l Joint Research] Universite de Strasbourg(フランス)

    • Related Report
      2024 Annual Research Report
  • [Int'l Joint Research] Universitat Basel(スイス)

    • Related Report
      2024 Annual Research Report
  • [Int'l Joint Research] Adana Science and Technology University(トルコ)

    • Related Report
      2024 Annual Research Report
  • [Int'l Joint Research] University of Strasbourg/ENS Lyon(フランス)

    • Related Report
      2023 Research-status Report
  • [Int'l Joint Research] 清華大学/華南理工大学(中国)

    • Related Report
      2023 Research-status Report
  • [Int'l Joint Research] Universite de Strasbourg(フランス)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Tsinghua University(中国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University of Strasbourg(フランス)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Universte de Strasbourg(フランス)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of Glasgow(英国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University de Strasbourg/University de Toulouse(フランス)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Universite de Strasbourg/Universite de Toulouse/Universite de Bourgogne(フランス)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Lipschitz and Quasiconformal Mappings in Cartography2025

    • Author(s)
      Miyachi Hideki、Ohshika Ken’ichi
    • Journal Title

      Essays on Geometry

      Volume: 1 Pages: 111-130

    • DOI

      10.1007/978-3-031-76257-4_7

    • ISBN
      9783031762567, 9783031762574
    • Related Report
      2024 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the Teichm?ller space of acute triangles2024

    • Author(s)
      Miyachi Hideki、Ohshika Ken’ichi、Papadopoulos Athanase
    • Journal Title

      Monatshefte f?r Mathematik

      Volume: 205 Issue: 3 Pages: 649-666

    • DOI

      10.1007/s00605-024-02017-2

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Teichmuler-Randers metric2024

    • Author(s)
      MIyachi Hideki, Ohshika Ken'ichi, Papadoupoulos Athanase
    • Journal Title

      Ann. Fourier Inst.

      Volume: to appear

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Realisation of Bending Measured Laminations by Kleinian Surface Groups2023

    • Author(s)
      Baba Shinpei、Ohshika Ken’ichi
    • Journal Title

      International Mathematics Research Notices

      Volume: 2023 Issue: 19 Pages: 16674-16707

    • DOI

      10.1093/imrn/rnac357

    • Related Report
      2023 Research-status Report
    • Peer Reviewed
  • [Journal Article] Surface bundles in 3-dimensional topology2023

    • Author(s)
      Ken'ichi Ohshika
    • Journal Title

      Essays in Geometry

      Volume: to appear

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Timelike Hilbert geometry of the spherical simplex2023

    • Author(s)
      Athanase Papadopoulos, Sumio Yamda
    • Journal Title

      Essays in Geometry

      Volume: to appear

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Tangent spaces of the Teichmuller space of the torus with Thurston's weak metric2022

    • Author(s)
      Miyachi Hideki、Ohshika Ken'ichi、Papadopoulos Athanase
    • Journal Title

      Annales Fennici Mathematici

      Volume: 47 Issue: 1 Pages: 325-334

    • DOI

      10.54330/afm.113702

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A survey of the Thurston norm2022

    • Author(s)
      Takahiro Kitayama
    • Journal Title

      In the Tradition of Thurston II

      Volume: - Pages: 149-199

    • DOI

      10.1007/978-3-030-97560-9_5

    • ISBN
      9783030975593, 9783030975609
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] On Adjoint Homological Selmer Modules for SL2-Representations of Knot Groups2022

    • Author(s)
      Kitayama Takahiro、Morishita Masanori、Tange Ryoto、Terashima Yuji
    • Journal Title

      International Mathematics Research Notices

      Volume: 255 Issue: 23 Pages: 19801-19826

    • DOI

      10.1093/imrn/rnac255

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Continuous and discontinuous functions on deformation spaces of Kleinian groups2021

    • Author(s)
      Ohshika Ken’ichi
    • Journal Title

      Topology and Geometry

      Volume: NA Pages: 477-502

    • DOI

      10.4171/irma/33-1/22

    • ISBN
      9783985470013, 9783985475018
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Some algebraic aspects of the Turaev cobracket2021

    • Author(s)
      Kawazumi Nariya
    • Journal Title

      Topology and Geometry

      Volume: - Pages: 329-356

    • DOI

      10.4171/irma/33-1/17

    • ISBN
      9783985470013, 9783985475018
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Homotopy ribbon concordance, Blanchfield pairings, and twisted Alexander polynomials2021

    • Author(s)
      Friedl Stefan、Kitayama Takahiro、Lewark Lukas、Nagel Matthias、Powell Mark
    • Journal Title

      Canadian Journal of Mathematics

      Volume: - Issue: 4 Pages: 1-40

    • DOI

      10.4153/s0008414x21000183

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Generalized Dehn twists on surfaces and homology cylinders2021

    • Author(s)
      Kuno Yusuke、Massuyeau Gwenael
    • Journal Title

      Algebraic & Geometric Topology

      Volume: 21 Issue: 2 Pages: 697-754

    • DOI

      10.2140/agt.2021.21.697

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Cluster realizations of Weyl groups and higher Teichmuller theory2021

    • Author(s)
      Rei Inoue, Tsukasa Ishibashi and Hironori Oya
    • Journal Title

      Selecta Mathematica

      Volume: 27 Issue: 3

    • DOI

      10.1007/s00029-021-00630-9

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] What is a black hole? -A geometric introduction2021

    • Author(s)
      Yamada Sumio
    • Journal Title

      Topology and Geometry

      Volume: - Pages: 579-598

    • DOI

      10.4171/irma/33-1/26

    • ISBN
      9783985470013, 9783985475018
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Character varieties of higher dimensional representations and splittings of 3-manifolds2021

    • Author(s)
      Hara Takashi、Kitayama Takahiro
    • Journal Title

      Geometriae Dedicata

      Volume: ー Issue: 1 Pages: 433-466

    • DOI

      10.1007/s10711-020-00590-y

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Cluster realization of Weyl groups and q-characters of quantum affine algebras2021

    • Author(s)
      Inoue Rei
    • Journal Title

      Letters in Mathematical Physics

      Volume: 111 Issue: 1 Pages: 1-32

    • DOI

      10.1007/s11005-020-01347-0

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Divergence, exotic convergence and self-bumping in quasi-Fuchsian spaces2020

    • Author(s)
      Ohshika Ken’ichi
    • Journal Title

      Annales de la Faculte des sciences de Toulouse : Mathematiques

      Volume: 29 Issue: 4 Pages: 805-895

    • DOI

      10.5802/afst.1647

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Goldman-Turaev formality implies Kashiwara-Vergne2020

    • Author(s)
      Alekseev Anton、Kawazumi Nariya、Kuno Yusuke、Naef Florian
    • Journal Title

      Quantum Topology

      Volume: 11 Issue: 4 Pages: 657-689

    • DOI

      10.4171/qt/143

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Meyer function on the handlebody group2020

    • Author(s)
      KUNO Yusuke、SATO Masatosh
    • Journal Title

      TURKISH JOURNAL OF MATHEMATICS

      Volume: 44 Issue: 5 Pages: 1520-1533

    • DOI

      10.3906/mat-1911-67

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Divergence, exotic convergence and self-bumping in quasi-Fuchsian spaces,2020

    • Author(s)
      Ken'ichi Ohshika
    • Journal Title

      Ann Fac Sci Math Toulouse

      Volume: to appear

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Goldman-Turaev formality implies Kashiwara-Vergne2020

    • Author(s)
      A. Alekseev, N. Kawazumi, Y. Kuno and F. Naef
    • Journal Title

      Quantum Topology

      Volume: to appear

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A comparison of classes in the Johnson cokernels of the mapping class groups of surfaces2020

    • Author(s)
      Naoya Enomoto, Yusuke Kuno, Takao Sahoh
    • Journal Title

      Topology and its Applications

      Volume: 271 Pages: 107052-107052

    • DOI

      10.1016/j.topol.2019.107052

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Poincare's geometric worldview and philosophy2019

    • Author(s)
      Ken'ichi Ohshika
    • Journal Title

      to appear in Geometry in History, edited by S. G. Dani, Athanase Papadopoulos

      Volume: - Pages: 435-450

    • DOI

      10.1007/978-3-030-13609-3_10

    • ISBN
      9783030136086, 9783030136093
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Convergence of Teichuller deformations in the universal Teichmuller space2019

    • Author(s)
      Miyachi Hideki、Saric Dragomir
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: 147 Issue: 11 Pages: 4877-4889

    • DOI

      10.1090/proc/14598

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Pluripotential theory on Teichm?ller space I: Pluricomplex Green function2019

    • Author(s)
      Miyachi Hideki
    • Journal Title

      Conformal Geometry and Dynamics of the American Mathematical Society

      Volume: 23 Issue: 13 Pages: 221-250

    • DOI

      10.1090/ecgd/340

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Timelike Hilbert and Funk geometries2019

    • Author(s)
      Papadopoulos Athanase、Yamada Sumio
    • Journal Title

      Differential Geometry and its Applications

      Volume: 67 Pages: 101554-101554

    • DOI

      10.1016/j.difgeo.2019.101554

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Bijections of geodesic lamination space preserving left Hausdorff convergence2019

    • Author(s)
      Ohshika Ken’ichi、Papadopoulos Athanase
    • Journal Title

      Monatshefte fur Mathematik

      Volume: 印刷中 Issue: 3 Pages: 507-521

    • DOI

      10.1007/s00605-018-1233-4

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] On the Cluster Nature and Quantization of Geometric R-Matrices2019

    • Author(s)
      Inoue Rei、Lam Thomas、Pylyavskyy Pavlo
    • Journal Title

      Publications of the Research Institute for Mathematical Sciences

      Volume: 55 Issue: 1 Pages: 25-78

    • DOI

      10.4171/prims/55-1-2

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Stationary Vacuum Black Holes in 5 Dimensions2019

    • Author(s)
      Marcus Khuri, Gilbert Weinstein, 山田 澄生
    • Journal Title

      Communications in Partial Differential Equations

      Volume: 43(8) Issue: 8 Pages: 1205-1241

    • DOI

      10.1080/03605302.2018.1517791

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Homeomorphismes et nombre d'intersection2018

    • Author(s)
      Ohshika Ken'ichi、Papadopoulos Athanase
    • Journal Title

      Comptes Rendus Mathematique

      Volume: 356 Issue: 8 Pages: 899-902

    • DOI

      10.1016/j.crma.2018.06.009

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Goldman-Turaev Lie bialgebra in genus zero and the Kashiwara-Vergne problem2018

    • Author(s)
      Anton Alekseev, Nariya Kawazumi, Yusuke Kuno and Florian Naef
    • Journal Title

      Advances in Mathematics

      Volume: 326 Pages: 1-53

    • DOI

      10.1016/j.aim.2017.12.005

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Representation varieties detect essential surfaces2018

    • Author(s)
      Friedl Stefan, Kitayama Takahiro and Nagel Matthias
    • Journal Title

      Mathematical Research Letters

      Volume: 25 Issue: 3 Pages: 803-817

    • DOI

      10.4310/mrl.2018.v25.n3.a4

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A dynamical approach to the infinitesimal spaces of quasiconformal mappings2018

    • Author(s)
      Miyachi Hideki
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: 147 Issue: 1 Pages: 215-227

    • DOI

      10.1090/proc/14243

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Les dimensions des faces de la sphere unite de l’espace tangent de l’espace de Teichmuller2025

    • Author(s)
      Ken'ichi Ohshika
    • Organizer
      IRMA GT3 Seminar
    • Related Report
      2024 Annual Research Report
  • [Presentation] Deux notions presque oubliees que Thurston a introduites pour des laminations geodesiques2024

    • Author(s)
      Ken'ichi Ohshika
    • Organizer
      IRMA GT3 Seminar
    • Related Report
      2024 Annual Research Report
  • [Presentation] Towards Complex Geometry on Teichmuller space2024

    • Author(s)
      Hideki Miyachi
    • Organizer
      Seminario a Department of Mathematics at Universita di Pisa, Universita di Pisa
    • Related Report
      2024 Annual Research Report
  • [Presentation] La merique de tremblement de terre sur l’espace de Teichmuller2024

    • Author(s)
      Ken'ichi Ohshika
    • Organizer
      Seminaire de topologie et geomerie
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] New loop operations and their application to surface automorphisms,2024

    • Author(s)
      Yusuke Kuno
    • Organizer
      Seminaire GT3 IRMA Strasbourg
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Stratification de la sphere unite tangente de l’espace de Teichmuller2024

    • Author(s)
      Ken'ichi Ohshika
    • Organizer
      Seminaire GT3 IRMA Strasbourg
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] The Teichmuller-Randers metric2023

    • Author(s)
      HIdeki Miyachi
    • Organizer
      Conference on Riemann surfaces and Discrete groups(
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Geometry of Teichmuller space with Thurston's asymmetric metric2022

    • Author(s)
      Ken'ichi Ohshika
    • Organizer
      Conference in Honor of 65th birthday of Athanase Papadopoulos,
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Stationary Einstein spacetime in 4 and 5 dimensions2022

    • Author(s)
      Sumio Yamada
    • Organizer
      Rencontres mathematiques a Sete. Geotrie, topologie et dynamique en basses dimensions
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Harmonics maps in general relativity2022

    • Author(s)
      Sumio Yamada
    • Organizer
      Yamabe Memorial Symposium
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Realisation de laminations mesurees sur les bords de coeurs convexes2022

    • Author(s)
      Ken'ichi Ohshika
    • Organizer
      IRMA Seminaire GT3
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 位相幾何学との融和によるタイヒミュラー空間上の複素解析2022

    • Author(s)
      宮地秀樹
    • Organizer
      第17回代数・解析・幾何学セミナー
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 調和写像を介したアインシュタイン定常時空の構成2022

    • Author(s)
      山田澄生
    • Organizer
      第17回代数・解析・幾何学セミナー
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 写像類群のリー代数を求めて2021

    • Author(s)
      河澄響矢,久野雄介
    • Organizer
      日本数学会秋季総合分科会トポロジー分科会幾何学分科会特別講演
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Ribbon concordance and twisted Alexander polynomials2021

    • Author(s)
      北山貴裕
    • Organizer
      トポロジーとコンピュータ 2021
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Cluster algebras and its applications to rational maps2021

    • Author(s)
      Rei Inoue
    • Organizer
      The 2022 ANZAMP(The Australian and New Zealand Association of Mathematical Physics) meeting
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Generalized Dehn twists and homology cylinders2021

    • Author(s)
      Yusuke Kuno
    • Organizer
      Topics at the Interface of Low Dimensional Group Actions and Geometric Structures
    • Related Report
      2020 Research-status Report
  • [Presentation] Projective lamination spaceの凸体実現とThurston距離の無限小剛性2020

    • Author(s)
      大鹿健一
    • Organizer
      リーマン面における位相幾何学
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Cluster realization of Weyl groups and its applications )2020

    • Author(s)
      井上玲
    • Organizer
      2020年度表現論シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] A double version of Turaev’s gate derivatives2020

    • Author(s)
      Nariya Kawazumi
    • Organizer
      Teichmuller Theory: Classical, Higher, Super and Quantum
    • Related Report
      2020 Research-status Report
  • [Presentation] Formality of the Goldman-Turaev Lie bialgebra and its applications (1)(2)2020

    • Author(s)
      Yusuke Kuno
    • Organizer
      Interactions between algebra and geometry (Strasbourg, France)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Thurston's bounded image theorem from today's point of view2019

    • Author(s)
      Ken'ichi Ohshika
    • Organizer
      Riemann surfaces and Teichmuller theory, Euler Institute St Petersburg, 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Thurston’s bounded image theorem2019

    • Author(s)
      Ken'ichi Ohshika
    • Organizer
      KIAS Workshop on low-dimensional topology, 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Actions of mapping class groups on various spaces and their rigidity2019

    • Author(s)
      Ken'ichi Ohshika
    • Organizer
      CIMPA SCHOOL ON FINSLER GEOMETRY AND APPLICATIONS, BANARAS HINDU UNIVERSITY, 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Poisson integral formula for Teichmueller space2019

    • Author(s)
      Hideki Miyachi
    • Organizer
      Riemann surfaces and Teichmuller theory, Euler Institute St Petersburg, 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Towards Complex analysis on Teichmueller space2019

    • Author(s)
      HIdeki Miyachi
    • Organizer
      International Conference on Complex Analysis 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] The Turaev cobracket and gate double derivatives2019

    • Author(s)
      Nariya Kawazumi
    • Organizer
      New developments in quantum topology, Department of Mathematics, University of California, Berkeley
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Gate double derivatives2019

    • Author(s)
      Nariya Kawazumi
    • Organizer
      `Expansions, Lie algebras and Invariants’, CRM, Montreal
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Symplectic/special expansions for surfaces2019

    • Author(s)
      Yusuke Kuno
    • Organizer
      `Expansions, Lie algebras and Invariants’, CRM, Montreal
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Timelike geometry and generalized de Sitter spaces2019

    • Author(s)
      Sumio Yamada
    • Organizer
      Riemann surfaces and Teichmuller theory, Euler Institute St Petersburg, 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Maximality of mapping class group actions2018

    • Author(s)
      Ken'ichi Ohshika
    • Organizer
      102e rencontre entre mathematiciens et physiciens theoriciens, Strasbourg
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Johnson homomorphisms and the Morita-Penner cocycle --- a survey2018

    • Author(s)
      Nariya Kawazumi
    • Organizer
      102e rencontre entre mathematiciens et physiciens theoriciens, Strasbourg
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Dehn twists and the Goldman-Turaev Lie bialgebra2018

    • Author(s)
      Nariya Kawazumi
    • Organizer
      2018 Seoul-Tokyo Conference `Geometry and Topology’ KIAS, Seoul
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Formality of the Goldman-Turaev Lie bialgebra and the Kashiwara-Vergne problem2018

    • Author(s)
      Yusuke Kuno
    • Organizer
      102e rencontre entre mathematiciens et physiciens theoriciens, Strasbourg
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Character varieties and essential surfaces2018

    • Author(s)
      Takahiro Kitayama
    • Organizer
      The 14th East Asian Conference on Geometric Topology, 北京大学, 中国
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] The Einstein equation according to Hermann Weyl2018

    • Author(s)
      Sumio Yamada
    • Organizer
      102e rencontre entre mathematiciens et physiciens theoriciens, Strasbourg
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] In the Tradition of Thurston II Geometry and Groups2022

    • Author(s)
      Ken'ichi Ohshika and Athanase Papadopoulos Ed.
    • Total Pages
      526
    • Publisher
      Springer
    • ISBN
      9783030975593
    • Related Report
      2022 Research-status Report
  • [Book] In the tradition of Thurston2020

    • Author(s)
      Ken'ichi Ohshika and Athanase Papadopoulos (Ed.)
    • Total Pages
      713
    • Publisher
      Springer Verlag, Cham
    • ISBN
      9783030559304
    • Related Report
      2020 Research-status Report

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Published: 2018-10-12   Modified: 2026-01-16  

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