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2009 Fiscal Year Self-evaluation Report

Study on operator theory and operator means

Research Project

  • PDF
Project/Area Number 19340035
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Basic analysis
Research InstitutionKyushu University

Principal Investigator

KOSAKI Hideki  Kyushu University, 大学院・数理学研究院, 教授 (20186612)

Project Period (FY) 2007 – 2010
Keywords作用素平均 / 正定値関数 / ノルム不等式 / ユニタリ不変ノルム
Research Abstract

研究代表者は,作用素平均等の作用素自身に関する研究及び作用素を含む様々な量(ノルム,トレース,エントロピー等の数理物理で現れる量)に関する不等式の研究を行ってきた.研究代表者が従来から興味を持ち,また近年同時並行的に研究を進めている以下二つの研究テーマに関する研究を更に深化・整備するのが本研究の目的であり,研究代表者独自の研究及び共同研究を組み合わせる形式で実行する予定である.
(i)作用素平均の研究
(ii)非有界作用素に対する並列和の理論とその応用

  • Research Products

    (6 results)

All 2009 2008 2007 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (3 results)

  • [Journal Article] On equalitycondition for trace Jensen inequalityin semifinite von Neumann algebras2008

    • Author(s)
      T. Harada, H. Kosaki
    • Journal Title

      Internat.J.Math. 19

      Pages: 481-501

    • Peer Reviewed
  • [Journal Article] On infinite divisibility of positive definite functions arising from operator means2007

    • Author(s)
      R. Bhatia, H. Kosaki
    • Journal Title

      Linear Algebra and Appl. 424

      Pages: 84-108

    • Peer Reviewed
  • [Journal Article] Trace Jensen inequality and related weak majorizationin semi-finite von Neumann algebra

    • Author(s)
      T. Harada, H. Kosaki
    • Journal Title

      J.Operator Theory (to appear)

    • Peer Reviewed
  • [Presentation] Norm comparison for operator means : general theory and new results2009

    • Author(s)
      H. Kosaki
    • Organizer
      Summer School and Advanced Workshop on Trend and Developments in Linear Algebra
    • Place of Presentation
      ICTP (Trieste)
    • Year and Date
      2009-07-06
  • [Presentation] Trace Jensen type inequality in von Neumann algebras and related topics, Operator Algebras and Quantum Field Theory2008

    • Author(s)
      H. Kosaki
    • Organizer
      Erwin Schrodinger International Institute of Mathematics and Physics
    • Place of Presentation
      Vienna
    • Year and Date
      2008-11-05
  • [Presentation] On Jensen-type majorizations in semifinite von Neumann algebras, Noncommutative Lp-spaces2007

    • Author(s)
      H. Kosaki
    • Organizer
      Operator Spaces and Applications
    • Place of Presentation
      CIRM (Luminy)
    • Year and Date
      2007-07-25

URL: 

Published: 2011-06-18   Modified: 2016-04-21  

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