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2009 Fiscal Year Annual Research Report

可換Banach環及びBanach modulesの分類とその応用

Research Project

Project/Area Number 19540159
Research InstitutionYamagata University

Principal Investigator

高橋 眞映  Yamagata University, 大学院・理工学研究科, 教授 (50007762)

Co-Investigator(Kenkyū-buntansha) 羽鳥 理  新潟大学, 自然科学系, 教授 (70156363)
Keywordscommutative Banach algebra / Gelfand transform / uniform algebra / Peripheral spectrum / convolution measure algebra / Mazur-Ulam theorem / Hyers-Ulam stability / superstability
Research Abstract

本研究はGelfand変換像及びHelgason-Wang変換像を特徴付けることにより、可換Banach環の分類を行い、その本質を探ることが主目的であった。実際これらの特徴付け問題から自然にBSE環とBED環という可換Banach環のクラスが生まれ、可換Banach環を4つのクラスに分類することが出来る。我々はこの可換Banach環の分類に関連して、半順序半単純可換Banach環がconvolution measure algebraとなるための条件を抽象的な調和解析の言葉で与えた。また、乗法的汎関数の超安定生に関する結果、Arhippainen-Mullerによるある種の評価に関する最適値問題の解決、ある種の対称性によるMazur-Ulamの定理の一般化などを得た。
これらの結果はしかるべきジャーナルに掲載または掲載予定である。詳細は研究発表の欄を参照されたい。

  • Research Products

    (15 results)

All 2010 2009 Other

All Journal Article (13 results) (of which Peer Reviewed: 13 results) Presentation (2 results)

  • [Journal Article] Isometries between groups of invertible elements in Banach algebras2009

    • Author(s)
      Osamu Hatori
    • Journal Title

      Studia, Math. 194-3

      Pages: 293-304

    • Peer Reviewed
  • [Journal Article] A general Hlawka inequality and its reverse inequality2009

    • Author(s)
      Yasuji Takahashi, Shuhei Wada, Sin-Ei Takahasi
    • Journal Title

      Math.Inequal.Appl. 12-1

      Pages: 1-10

    • Peer Reviewed
  • [Journal Article] An estimate of the commutativity of C^2-functions and probability measures2009

    • Author(s)
      Takeshi Miura, Takahiro Hayata, Sin-Ei Takahasi
    • Journal Title

      Math.Inequal.Appl. 3-2

      Pages: 169-180

    • Peer Reviewed
  • [Journal Article] Peripheral multiplicativity of maps on uniformly closed algebras of continuous functions which vanish at infinity2009

    • Author(s)
      Osamu Hatori, Takeshi Miura, Hirokazu Oka, Hiroyuki Takagi
    • Journal Title

      Tokyo J.Math. 32-1

      Pages: 91-104

    • Peer Reviewed
  • [Journal Article] A Stone-Weierestras theorem for Banach function spaces satisfying a certain separation property2009

    • Author(s)
      Eggert Briem, Osamu Hatori, Stuart Sindey
    • Journal Title

      J.Math.Anal.Appl. 353-2

      Pages: 47-59

    • Peer Reviewed
  • [Journal Article] Peripherally monomial-preserving maps between uniform algebras2009

    • Author(s)
      Osamu Hatori, Kazumi Hino, Takeshi Miura, Hirokazu Oka
    • Journal Title

      Mediterr.J.Math. 6-1

      Pages: 47-59

    • Peer Reviewed
  • [Journal Article] Refined generalization of the triangle inequality on Banach space

    • Author(s)
      Sin-Ei Takahasi, John M.Rassias, Saburou Saitoh, Yasuji Takahashi
    • Journal Title

      Math.Inequal.Appl. (近刊(印刷中))

    • Peer Reviewed
  • [Journal Article] A perturbation of first order linear differential equation for Banach space-valued holomorphic functions

    • Author(s)
      Takeshi Miura, Hirokazu Oka, Sin-Ei Takahasi
    • Journal Title

      J.Math.Inequal. (近刊(印刷中))

    • Peer Reviewed
  • [Journal Article] Stability of almost multiplicative functionals

    • Author(s)
      Norio Niwa, Hirokazu Oka, Takeshi Miura, Sin-Ei Takahasi
    • Journal Title

      Aust.J.Math.Anal.Appl. (近刊(印刷中))

    • Peer Reviewed
  • [Journal Article] Superstability of generalized multiplicative functionals

    • Author(s)
      Takeshi Miura, Hiroyuki Takagi, Makoto Tsukada, Sin-Ei Takahasi
    • Journal Title

      J.Inequal.Appl. (近刊(印刷中))

    • Peer Reviewed
  • [Journal Article] Reflections and a generalization of the Mazur-Ulam theorem

    • Author(s)
      Osamu Hatori, Kiyotaka Kobayashi, Takeshi Miura, Sin-Ei Takahasi
    • Journal Title

      Rocky Mountain J.Math. (近刊(印刷中))

    • Peer Reviewed
  • [Journal Article] An equality condition of Arhippainen-Muller's estimate and its related problem

    • Author(s)
      Sin-Ei Takahasi, Takeshi Miura, Takahiro Hayata
    • Journal Title

      Taiwanese J.Math. (近刊(印刷中))

    • Peer Reviewed
  • [Journal Article] Note on the Hyers-Ulam-Rassias stability of the first order linear differential equation y'(t)+p(t)y(t)+q(t)=0

    • Author(s)
      Takeshi Miura, Go Hirasawa, Sin-Ei Takahasi
    • Journal Title

      Nonlinear Funct.Anal.Appl. (近刊(印刷中))

    • Peer Reviewed
  • [Presentation] 乗法的複素数値関数を超安定にさせる2項演算の決定2010

    • Author(s)
      高橋眞映、三浦毅、塚田真、高木啓行
    • Organizer
      日本数学会春季大会
    • Place of Presentation
      慶応大学日吉キャンパス
    • Year and Date
      2010-03-26
  • [Presentation] 複素数値関数の超安定性と2項演算2009

    • Author(s)
      高橋眞映、三浦毅、塚田真、高木啓行
    • Organizer
      日本数学会秋季大会
    • Place of Presentation
      大阪大学豊中キャンパス
    • Year and Date
      2009-09-25

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Published: 2011-06-16   Modified: 2016-04-21  

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