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2015 Fiscal Year Research-status Report

C*-環の包含関係における不変的性質についての研究

Research Project

Project/Area Number 26400125
Research InstitutionRitsumeikan University

Principal Investigator

大坂 博幸  立命館大学, 理工学部, 教授 (00244286)

Project Period (FY) 2014-04-01 – 2017-03-31
KeywordsRokhlin property / Cuntz-Pimsner algebras / Hilbert C*-modules / Linking algebras / Nuclear dimension / Self-absorbing / Cuntz semigroups
Outline of Annual Research Achievements

Santanu Dey氏, Harsh Trivedi氏との共同研究においてC*-correspondence, および, Hilbert C*-bimodule上への有限群の作用のロホリン性について定義し, 基本的な性質を調べた. 有限群からのC*-接合積において不変なC*-環上の重要な性質が, C*-correspondenceから生成されるC*-環においても不変であることが主な結果である. Hilbert C*-A-moduleにおいては, 有限群の作用がロホリン性を持つ場合は, C*-環A上の性質が, それに付随するlinking環に遺伝することを示すことができた.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

C*-correspondence上への有限群の作用のロホリン性について定式化および基本性質を調べ, 論文としてまとめることができた. しかし, 当初は非整数値を持つ包含関係でロホリン性をもつ例の構成は困難でないと予想していたが,意外と難しいことがわかり, 現在照屋氏と取り組んでいる.

Strategy for Future Research Activity

照屋氏との共同研究において, ロホリン性を持つC*-包含関係で, 非整数値指数をもつ例の構成を試みているがうまく至っていない. ロホリン性を持つ包含関係を, 単射的II_1因子環に応用し, Jones氏の指数理論を用いて非整数値の例を構成することを試みる.

  • Research Products

    (10 results)

All 2015 Other

All Int'l Joint Research (2 results) Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 3 results,  Acknowledgement Compliant: 3 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results) Remarks (1 results)

  • [Int'l Joint Research] Indian Institute of Technology Bombay(India)

    • Country Name
      India
    • Counterpart Institution
      Indian Institute of Technology Bombay
  • [Int'l Joint Research] Mathematical Institute/Institute for computational Sciences(ベトナム)

    • Country Name
      VIET NAM
    • Counterpart Institution
      Mathematical Institute/Institute for computational Sciences
  • [Journal Article] Inequalities for interpolation functions2015

    • Author(s)
      Dinh Trung Hoa and H. Osaka
    • Journal Title

      Banach J. Math. Anal.

      Volume: 9 Pages: 67-74

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Interpolation classes and matrix means2015

    • Author(s)
      Dinh Trung Hoa, Toan M. Ho, and H. Osaka
    • Journal Title

      Banach J. Math. Anal.

      Volume: 9 Pages: 140-152

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Characterization of operator monotone functions by Powers-Størmer type inequalities2015

    • Author(s)
      Dinh Trung Hoa, H. Osaka, and J. Tomiyama
    • Journal Title

      Linear Multilinear Algebras

      Volume: 63 Pages: 1577-1589

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Symmetric operator monotone functions and operator means2015

    • Author(s)
      H. Osaka
    • Organizer
      作用素論・作用素環論研究集会
    • Place of Presentation
      KKR妙高高原白樺荘(新潟県妙高市)
    • Year and Date
      2015-10-25
    • Invited
  • [Presentation] Some operator inequalities which characterize operator means2015

    • Author(s)
      大坂博幸, 和田州平, 鶴見幸大
    • Organizer
      日本数学会2015年度秋期総合分科会
    • Place of Presentation
      京都産業大学(京都府京都市)
    • Year and Date
      2015-09-15
  • [Presentation] Some operator inequalities which characterize operator means2015

    • Author(s)
      H. Osaka
    • Organizer
      Workshop on Quantum information theory and related topics
    • Place of Presentation
      (ベトナム)ハノイ
    • Year and Date
      2015-09-01
    • Int'l Joint Research / Invited
  • [Presentation] The Rokhlin property for an inclusion of C*-algebras2015

    • Author(s)
      H. Osaka
    • Organizer
      Special Week on Operator Algebras
    • Place of Presentation
      (中国)上海
    • Year and Date
      2015-06-03
    • Int'l Joint Research / Invited
  • [Remarks] 立命館大学研究者学術データーベース

    • URL

      http://research-db.ritsumei.ac.jp/scripts/websearch/index.htm

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Published: 2017-01-06   Modified: 2022-02-22  

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