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An approach to the superrigidity of infinite discrete groups via random groups

Research Project

Project/Area Number 25287013
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Geometry
Research InstitutionKeio University

Principal Investigator

IZEKI Hiroyasu  慶應義塾大学, 理工学部(矢上), 教授 (90244409)

Co-Investigator(Kenkyū-buntansha) 服部 広大  慶應義塾大学, 理工学部(矢上), 講師 (30586087)
勝良 健史  慶應義塾大学, 理工学部(矢上), 准教授 (50513298)
前田 吉昭  慶應義塾大学, 理工学部, 教授 (40101076)
Co-Investigator(Renkei-kenkyūsha) NAYATANI Shin  名古屋大学, 大学院多元数理科学研究科, 教授 (70222180)
Research Collaborator KONDO Takefumi  鹿児島大学, 理学部
Project Period (FY) 2013-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords離散群 / 剛性 / 調和写像 / ランダム群 / 超剛性 / 固定点性質 / 非正曲率空間 / 国際研究者交流 / 韓国:アメリカ:イスラエル
Outline of Final Research Achievements

The group is an algebraic object which also gives a description of symmetries of spaces. Some important and interesting groups often admits a property called "superrigidity", which we tried to understand as an extremal property among that involving infinite discrete groups. We could show that a fixed-point property, which should be considered to be an important aspect of superrigidity, is shared by finitely presented groups with overwhelming probability.

Report

(6 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • 2013 Annual Research Report
  • Research Products

    (19 results)

All 2018 2017 2016 2015 2014 2013 Other

All Int'l Joint Research (2 results) Journal Article (6 results) (of which Open Access: 2 results,  Peer Reviewed: 3 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 7 results) Book (1 results) Funded Workshop (3 results)

  • [Int'l Joint Research] Polish Academy of Science/University of Warsaw(ポーランド)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] Korean Institute for Advanced Study(韓国)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] A fixed point property of random groups2018

    • Author(s)
      井関 裕靖
    • Journal Title

      京都大学数理解析研究所講究録

      Volume: 2062

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] 離散群のポアソン境界と剛性2015

    • Author(s)
      井関 裕靖
    • Journal Title

      Geometry and Analysis, Fukuoka

      Volume: 1

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Fixed-point property of random quotients of plain words2014

    • Author(s)
      Hiroyasu Izeki
    • Journal Title

      Groups, Geometry, and Dynamics

      Volume: 8 Issue: 4 Pages: 1101-1140

    • DOI

      10.4171/ggd/257

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 離散群の剛性と同変写像のエネルギー増大度2014

    • Author(s)
      井関 裕靖
    • Journal Title

      Geometry and Analysis, Fukuoka

      Volume: 1 Pages: 159-163

    • Related Report
      2014 Annual Research Report
  • [Journal Article] Fixed-point property of random quotients by plain words2014

    • Author(s)
      Hiroyasu Izeki
    • Journal Title

      Groups, Geometry, and Dynamics

      Volume: 印刷中

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Deformation quantization of gauge theory in R4 and U(1) instanton problems2013

    • Author(s)
      Yoshiaki Maeda, Atushi Sako
    • Journal Title

      Noncommutative geometry and physics

      Volume: 3 Pages: 471-483

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Presentation] A fixed-point property of random groups2017

    • Author(s)
      Hiroyasu Izeki
    • Organizer
      Boston-Keio Workshop
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A fixed-point property of random groups2016

    • Author(s)
      Hiroyasu Izeki
    • Organizer
      Topology and Analysis of Discrete Groups and Hyperbolic Geometry
    • Place of Presentation
      京都大学数理解析研究所(京都府・京都市)
    • Year and Date
      2016-06-20
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 離散群のポアソン境界と剛性2015

    • Author(s)
      井関 裕靖
    • Organizer
      福岡大学微分幾何研究会
    • Place of Presentation
      福岡大学セミナーハウス(福岡県・福岡市)
    • Year and Date
      2015-11-01
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] 離散群の剛性と同変写像のエネルギー増大度2014

    • Author(s)
      井関 裕靖
    • Organizer
      名古屋大学剛性セミナー
    • Place of Presentation
      名古屋大学多元数理科学研究科(愛知県名古屋市)
    • Year and Date
      2014-11-13
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] 離散群の剛性と同変写像のエネルギー増大度2014

    • Author(s)
      井関 裕靖
    • Organizer
      福岡微分幾何研究会
    • Place of Presentation
      福岡大学セミナーハウス(福岡県福岡市)
    • Year and Date
      2014-11-03
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] ランダム群のLp空間に対する固定点性質2013

    • Author(s)
      井関裕靖
    • Organizer
      筑波大学微分幾何学火曜セミナー
    • Place of Presentation
      筑波大学
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Star representation of SL(2,R)2013

    • Author(s)
      Yoshiaki Maeda
    • Organizer
      Trend in Geometry and Analysis
    • Place of Presentation
      EPFL, Switzerland
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Book] 山辺の問題2013

    • Author(s)
      小林治、芥川和雄、井関裕靖
    • Total Pages
      75
    • Publisher
      日本数学会
    • Related Report
      2013 Annual Research Report
  • [Funded Workshop] Rigidity School, Nagoya 20172017

    • Related Report
      2017 Annual Research Report
  • [Funded Workshop] Rigidity School, Nagoya 20162016

    • Place of Presentation
      名古屋大学大学院多元数理科学研究科(愛知県・名古屋市)
    • Year and Date
      2016-07-26
    • Related Report
      2016 Annual Research Report
  • [Funded Workshop] Rigidity School, Tokyo 20152015

    • Place of Presentation
      東京大学数理科学研究科(東京都・目黒区)
    • Year and Date
      2015-11-20
    • Related Report
      2015 Annual Research Report

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Published: 2013-05-21   Modified: 2019-07-29  

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