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2008 Fiscal Year Final Research Report

Study of the topological structure of metric spaces of non-positive curvature

Research Project

  • PDF
Project/Area Number 18740023
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Geometry
Research InstitutionUniversity of Tsukuba (2007-2008)
Tohoku University (2006)

Principal Investigator

NAGANO Koichi  University of Tsukuba, 大学院・数理物質科学研究科, 講師 (30333777)

Project Period (FY) 2006 – 2008
Keywords微分幾何学 / リーマン幾何学
Research Abstract

研究成果の概要 : 非正曲率距離空間に代表されるCAT(k)空間の位相構造の理解を目指し,主に,CAT(k)空間がいつn次元位相多様体になるかについて記述する局所位相正則性の問題(Lytchak氏と共同),および2次元CAT(k)空間の幾何構造と位相構造に関するGauss・Bonnetの定理等(Kleiner氏,塩谷氏,山口氏と共同)について取り組み,汎用性の高い成果を得た.

  • Research Products

    (14 results)

All 2008 2007 2006

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (12 results)

  • [Journal Article] Free construction of CAT(1) spaces2007

    • Author(s)
      Koichi Nagano
    • Journal Title

      Archiv der Mathematik 88

      Pages: 173-180

    • Peer Reviewed
  • [Journal Article] Fixed point sets of parabolic isometries of CAT(0)-spaces2006

    • Author(s)
      Koji Fujiwara, Koichi Nagano, and Takashi Shioya
    • Journal Title

      Commentarii Mathematici Helvetici 81

      Pages: 305-335

    • Peer Reviewed
  • [Presentation] 曲率が上に有界な2次元距離空間2008

    • Author(s)
      永野幸一
    • Organizer
      東北大学談話会
    • Place of Presentation
      東北大学
    • Year and Date
      2008-11-17
  • [Presentation] A characterization of 2-dimensional spherical buildings2008

    • Author(s)
      永野幸一
    • Organizer
      研究会「リーマン幾何と幾何解析」
    • Place of Presentation
      筑波大学
    • Year and Date
      2008-02-19
  • [Presentation] Topological regularity of Alexandrov spaces with an upper curvature bound2007

    • Author(s)
      Koichi Nagano
    • Organizer
      Third Russian-German Geometry Meeting-dedicated 95-anniversary of A. D. Alexandrov
    • Place of Presentation
      Steklov Institute of Mathematics (St. Petersburg, Russia)
    • Year and Date
      2007-06-18
  • [Presentation] CAT(1)空間の位相正則性2006

    • Author(s)
      永野幸一
    • Organizer
      東北大学談話会
    • Place of Presentation
      東北大学
    • Year and Date
      2006-12-18
  • [Presentation] CAT(1)空間の求積可能性2006

    • Author(s)
      永野幸一
    • Organizer
      研究会「測地線及び関連する諸問題」,
    • Place of Presentation
      熊本大学
    • Year and Date
      2006-10-28
  • [Presentation] Topological regularity of CAT(1) spaces2006

    • Author(s)
      Koichi Nagano
    • Organizer
      Rigidity School, Nagoya 2006
    • Place of Presentation
      名古屋大学
    • Year and Date
      2006-09-28
  • [Presentation] A sphere theorem for CAT(1) spaces2006

    • Author(s)
      永野幸一
    • Organizer
      日本数学会秋期総合分科会幾何学分科会, 特別講演
    • Place of Presentation
      大阪市立大学
    • Year and Date
      2006-09-21
  • [Presentation] Topological regularity of CAT(1) spaces2006

    • Author(s)
      永野幸一
    • Organizer
      第53回幾何学シンポジウム,全体講演
    • Place of Presentation
      金沢大学
    • Year and Date
      2006-08-05
  • [Presentation] Topological regularity of CAT(1) spaces2006

    • Author(s)
      永野幸一
    • Organizer
      岡山大学談話会
    • Place of Presentation
      岡山大学
    • Year and Date
      2006-07-21
  • [Presentation] Distance and convexity2006

    • Author(s)
      Koichi Nagano
    • Organizer
      第4回COEシンポジウム「物質階層融合科学の構築」国際会議
    • Place of Presentation
      仙台国際センター
    • Year and Date
      2006-06-28
  • [Presentation] Topological regularity of CAT(1) spaces2006

    • Author(s)
      永野幸一
    • Organizer
      筑波大学微分幾何学火曜セミナー
    • Place of Presentation
      筑波大学
    • Year and Date
      2006-06-27
  • [Presentation] Rectifiability of CAT(1) spaces2006

    • Author(s)
      永野幸一
    • Organizer
      東北大学幾何学セミナー
    • Place of Presentation
      東北大学
    • Year and Date
      2006-04-25

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Published: 2010-06-10   Modified: 2016-04-21  

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