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2019 Fiscal Year Annual Research Report

C*-algebras and its applications to classification of symbolic dynamical systems and study of orbit equivalence

Research Project

Project/Area Number 15K04896
Research InstitutionJoetsu University of Education

Principal Investigator

松本 健吾  上越教育大学, 大学院学校教育研究科, 教授 (40241864)

Project Period (FY) 2015-04-01 – 2020-03-31
Keywords記号力学系 / 双曲型力学系 / C*-環 / 作用素環 / サブシフト / 位相的マルコフシフト / Cuntz-Krieger algebra / Ruelle algebra
Outline of Annual Research Achievements

本研究最終年度には、記号力学系と作用素環論の研究者ドイツ・ハイデルベルグ大学Wollfgang Krieger 教授を共同研究のため招聘、また北海道大学から吉田啓佑氏を位相力学系からできるC*-環について共同研究のため招聘、さらには、東京大学数理科学研究科で行われた作用素環セミナー、京都大学数理解析研究所での作用素環論研究会に出席し、作用素環論研究者と研究交流や研究討論が進み、記号力学系や双曲型力学系から作られるC*-環と元の力学系との関係について、軌道同型や位相共役の視点から大きな知見を得た。W. Krieger 教授との共同研究の成果は「Markov-Dyck shifts, neutral periodic points and topological conjugacy」の表題の論文にまとめられ、Discrete and Continuous Dynamical Systems という国際研究ジャーナルに掲載された。 また、記号力学系を一般化した双曲型力学系の軌道同型類と対応するC*-環の研究の成果は、Asymptotic continuous orbit equivalence of Smale spaces 」にまとめられ、Canadian Journal of Mathematics に掲載された。他にも論文「Subshifts, lambda-graph bisystems and C*-algebras」がJournal of Mathematical Analysis and Applications に掲載された。一般のサブシフトの軌道同型と対応するC*-環の関係について考察した論文「A groupoid approach to C*-algebras associated with lambda-graph systems」も掲載が決まっている。

  • Research Products

    (8 results)

All 2020 2019

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 7 results) Presentation (1 results)

  • [Journal Article] A groupoid approach to C*-algebras associated with lambda-graph systems and continuous orbit equivalence of subshifts2020

    • Author(s)
      Kengo Matsumoto
    • Journal Title

      Dynamical Systems

      Volume: - Pages: -

    • DOI

      https://doi.org/10.1080/14689367.2020.1716952

    • Peer Reviewed / Open Access
  • [Journal Article] Continuous orbit equivalence of Markov shifts and KMS states on Cuntz-Krieger algebras2020

    • Author(s)
      Kengo Matsumoto
    • Journal Title

      Discrete and Continuous Dynamical Systems

      Volume: - Pages: -

    • Peer Reviewed / Open Access
  • [Journal Article] Stae splittings, strong shift equivalence and stable isomorphism of Cuntz-Krieger algebras2019

    • Author(s)
      Kengo Matsumoto
    • Journal Title

      Dynamical Systems

      Volume: 34 Pages: 93-112

    • DOI

      https://doi.org/10.1080/14689367.2018.1470227

    • Peer Reviewed / Open Access
  • [Journal Article] Markov-Dyck shifts, neutral periodic points and topological conjugacy2019

    • Author(s)
      Wolfgang Krieger , Kengo Matsumoto
    • Journal Title

      Discrete and Continuous Dynamical Systems

      Volume: 39 Pages: 1-18

    • DOI

      doi: 10.3934/dcds.2019001

    • Peer Reviewed / Open Access
  • [Journal Article] Asymptotic continuous orbit equivalence of Smale spaces and Ruelle algebras2019

    • Author(s)
      Kengo Matsumoto
    • Journal Title

      Canadian Journal of Mathematics

      Volume: 71 Pages: 1243-1296

    • DOI

      DOI: https://doi.org/10.4153/CJM-2018-012-

    • Peer Reviewed / Open Access
  • [Journal Article] Topological conjugacy of topological markov shifts and Ruelle algebras2019

    • Author(s)
      Kengo Matsumoto
    • Journal Title

      Journal of Operator Theory

      Volume: 82 Pages: 253-284

    • DOI

      http://dx.doi.org/10.7900/jot.2018apr08.2235

    • Peer Reviewed / Open Access
  • [Journal Article] Subshifts, lambda-graph-bisystems and C*-algebras2019

    • Author(s)
      Kengo Matsumoto
    • Journal Title

      Jpurnal of Mathematical Analysis and Applications

      Volume: 485 Pages: 123843, 55p

    • DOI

      https://doi.org/10.1016/j.jmaa.2020.123843

    • Peer Reviewed / Open Access
  • [Presentation] Subshifts , lambda-graph bysystems and their c*-algebras2019

    • Author(s)
      松本 健吾
    • Organizer
      日本数学会秋季総合分科会

URL: 

Published: 2021-01-27  

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