• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Classification of operator algebras and applications to dynamical systems

Research Project

Project/Area Number 15K17553
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Basic analysis
Research InstitutionKyoto University

Principal Investigator

Sato Yasuhiko  京都大学, 理学研究科, 助教 (70581502)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
KeywordsC*-環 / 分類可能性 / Jiang-Su 環 / 核型次元 / 力学系 / 従順群 / 核型C*環 / 分解階数 / Jiang-Su環 / 従順群の作用 / 作用素環 / 分類定理 / 分類理論 / 自己同型
Outline of Final Research Achievements

A mathematical object in which xy≠yx can happen is called non-commutative. In this research, we aim to classify operator algebras (C*-algebras) which were introduced in order to represent non-commutative mathematics in infinite dimensional spaces. As a consequence of this study, we generalized my previous answer to Toms-Winter conjecture of the case of a unique tracial state, to the case of compact finite dimensional spaces much larger situation. Furthermore, investigating discrete countable amenable group actions on classifiable C*-algebras, this research showed the classifiability of the crossed product C*-algebras, which are known as C*-algebras containing information on given dynamical systems.

Academic Significance and Societal Importance of the Research Achievements

作用素環の分類理論における重要未解決問題の1つに Toms-Winter予想とよばれる問題がある。本研究では、この予想の肯定解を「トレースの端点空間がコンパクト有限次元」という基礎的な場合に与えた。これまで日本の作用素環の研究が力学系に主眼を置いていたのに対し、この結果は分類理論そのものへ重要な応用を与えたといえる。また、この結果を更に逆輸入する形で、接合積とよばれる力学系の情報を含む作用素環の分類可能性を示した。現在 S. White, A. Tikuisis, W. Winter, G. Szabo, をはじめ多くの研究者がこの研究成果を元にした結果を与えている。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (39 results)

All 2019 2018 2017 2016 2015 Other

All Int'l Joint Research (6 results) Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 3 results,  Acknowledgement Compliant: 1 results) Presentation (27 results) (of which Int'l Joint Research: 23 results,  Invited: 18 results)

  • [Int'l Joint Research] Purdue University(米国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research]

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Pennsylvania State University(米国)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] University of Glasgow/University of Aberdeen(英国)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] University of Munster(ドイツ)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] University of Copenhagen(デンマーク)

    • Related Report
      2015 Research-status Report
  • [Journal Article] Covering Dimension of C*-Algebras and 2-Coloured Classification2019

    • Author(s)
      Bosa Joan、Brown Nathanial、Sato Yasuhiko、Tikuisis Aaron、White Stuart、Winter Wilhelm
    • Journal Title

      Memoirs of the American Mathematical Society

      Volume: 257 Issue: 1233 Pages: 1-97

    • DOI

      10.1090/memo/1233

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Actions of amenable groups and crossed products of Z-absorbing C*-algebras2019

    • Author(s)
      Y. Sato
    • Journal Title

      Advanced Studies in Pure Mathematics

      Volume: 80 Pages: 189-210

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] C*環の分類理論の進展2018

    • Author(s)
      佐藤 康彦
    • Journal Title

      数学(日本数学会)

      Volume: 70

    • NAID

      130007790738

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Actions of amenable groups and crossed products of Z-absorbing C*-algebras2017

    • Author(s)
      Yasuhiko Sato
    • Journal Title

      Proceedings of the 9th MSJ-SI.

      Volume: 未定

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Covering dimension of C*-algebras and 2-coloured Classification2016

    • Author(s)
      J. Bosa, N. P. Brown, Y. Sato, A. Tikuisis, S. White, W. Winter
    • Journal Title

      Memoirs of the American Mathematical Society

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] C*環の分類理論の進展2016

    • Author(s)
      佐藤 康彦
    • Journal Title

      日本数学会「数学」論説

    • NAID

      130007790738

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Actions of amenable groups and crossed products of Z-absorbing C*-algebras2018

    • Author(s)
      Yasuhiko Sato
    • Organizer
      NCGOA2018 C*-algebras and dynamics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Actions of amenable groups and crossed products of Z-absorbing C*-algebras2018

    • Author(s)
      Yasuhiko Sato
    • Organizer
      14th KOAS, in Busan
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Actions of amenable groups and crossed products of Z-absorbing C*-algebras2018

    • Author(s)
      Yasuhiko Sato
    • Organizer
      International Workshop on Operator Theory and Applications
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Actions of amenable groups and absorption of the Jiang-Su algebra2018

    • Author(s)
      Yasuhiko Sato
    • Organizer
      RIMS研究集会、 作用素環論の最近の進展
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] A calculation of nuclear dimension and certain ranks of amenability2018

    • Author(s)
      Yasuhiko Sato
    • Organizer
      Purdue Operator Algebra Seminar
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A calculation of nuclear dimension and certain ranks of amenability2018

    • Author(s)
      Yasuhiko Sato
    • Organizer
      MSJ Spring Meeting 2019
    • Related Report
      2018 Annual Research Report
  • [Presentation] Actions of amenable groups and absorption of the Jiang-Su algebra2017

    • Author(s)
      Yasuhiko Sato
    • Organizer
      Special Week on Operator Algebra, East China Normal University
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Automorphisms with the Rohlin property on nuclear C*-algebras2017

    • Author(s)
      Yasuhiko Sato
    • Organizer
      The third summer school on Operator Algebras, Heibei Normal University(China)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 擬対角化を導く射影作用素2017

    • Author(s)
      佐藤 康彦
    • Organizer
      2017年度関数解析研究会, 奈良女子大学
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Projections associated with quasidiagonality2017

    • Author(s)
      Yasuhiko Sato
    • Organizer
      Future Targets in the Classification Program for Amenable C*-Algebras, BIRA Banff (Canada)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 擬対角化を導く射影作用素2017

    • Author(s)
      佐藤 康彦
    • Organizer
      日本数学会秋季分科会、
    • Related Report
      2017 Research-status Report
  • [Presentation] Projections associated with quasidiagonality2017

    • Author(s)
      Yasuhiko Sato
    • Organizer
      作用素論作用素環論研究集会、立命館大学
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Bogoliubov actions of amenable groups on the CAR algebra2017

    • Author(s)
      Yasuhiko Sato
    • Organizer
      Operator Algebras Seminar
    • Place of Presentation
      Purdue University, US
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Automorphisms of Nuclear C*-algebras2016

    • Author(s)
      Yasuhiko Sato
    • Organizer
      Workshop Classification and dynamical systems I: C*-algebras
    • Place of Presentation
      Institut Mittag-Leffler
    • Year and Date
      2016-02-22
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Automorphisms of Nuclear C*-algebras2016

    • Author(s)
      Yasuhiko Sato
    • Organizer
      2016 Operator Algebras May Program
    • Place of Presentation
      East China Normal University, China
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Tracial approximation and strict comparison for nuclear C*-algebras and their dynamical systems2016

    • Author(s)
      Yasuhiko Sato
    • Organizer
      International Conference on Structure of C*-algebras and Tracial Approximation
    • Place of Presentation
      Hebei Normal University, China
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Automorphisms with the Rohlin property on nuclear C*-algebras2016

    • Author(s)
      Yasuhiko Sato
    • Organizer
      MSJ-SI "Operator Algebras and Mathematical Physics"
    • Place of Presentation
      Tohoku University, Sendai
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Automorphisms with the Rohlin property on nuclear C*-algebras2016

    • Author(s)
      Yasuhiko Sato
    • Organizer
      East Coast Operator Algebras Symposium
    • Place of Presentation
      Chicago Loyola University, US
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Automorphisms with the Rohlin property on nuclear C*-algebras2016

    • Author(s)
      Yasuhiko Sato
    • Organizer
      West Coast Operator Algebras Symposium
    • Place of Presentation
      University of Wyoming, US
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Strict comparison associated with pure states of nuclear C*-algebras2016

    • Author(s)
      Yasuhiko Sato
    • Organizer
      Linear Analysis Seminar
    • Place of Presentation
      Texas A&M University, US
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Automorphisms of Nuclear C*-algebras2015

    • Author(s)
      Yasuhiko Sato
    • Organizer
      Wabash Seminar
    • Place of Presentation
      Wabash College
    • Year and Date
      2015-11-14
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Automorphisms of nuclear C*-algebras2015

    • Author(s)
      Yasuhiko Sato
    • Organizer
      Noncommutative Geometry Seminar
    • Place of Presentation
      Pennsylvania State University
    • Year and Date
      2015-10-29
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Elementary amenable groups and Quasidiagonality2015

    • Author(s)
      Yasuhiko Sato
    • Organizer
      Workshop on C*-algebras: Geometry and Actions
    • Place of Presentation
      University of Munster
    • Year and Date
      2015-07-15
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Classification of certain order zero c.p. maps by traces2015

    • Author(s)
      Yasuhiko Sato
    • Organizer
      International conference on C*-algebras and Dynamical systems
    • Place of Presentation
      Hebei Normal University, Shijiazhuang, China
    • Year and Date
      2015-06-30
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Classification theory and order zero maps2015

    • Author(s)
      Yasuhiko Sato
    • Organizer
      The Structure of C*-Algebras
    • Place of Presentation
      University of Wyoming
    • Year and Date
      2015-06-01
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Strict comparison and absorption of the Jiang-Su algebra2015

    • Author(s)
      Yasuhiko Sato
    • Organizer
      Great Plains Operator Theory Symposium 2015
    • Place of Presentation
      Purdue University
    • Year and Date
      2015-05-28
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Classification of certain order zero c.p. maps by traces2015

    • Author(s)
      Yasuhiko Sato
    • Organizer
      Workshop on C*-algebras: Structure and Classification
    • Place of Presentation
      University of Munster
    • Year and Date
      2015-04-24
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2015-04-16   Modified: 2022-02-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi