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Certain spectrum preserving maps on Banach algebras and the stability of their perburbations

Research Project

Project/Area Number 15K04921
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Basic analysis
Research InstitutionNiigata University

Principal Investigator

MIURA TAKESHI  新潟大学, 自然科学系, 教授 (90333989)

Co-Investigator(Kenkyū-buntansha) 羽鳥 理  新潟大学, 自然科学系, 教授 (70156363)
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
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: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords等距離写像 / 端点 / Choquet境界 / 関数環 / 可換Banach環 / 極大イデアル空間 / 全射等距離写像 / 双対空間 / 関数空間 / スペクトル保存写像 / 荷重合成作用素
Outline of Final Research Achievements

In this research subject, the structure of, what is so called, multiplicatively spectrum preserving maps between commutative Banach algebras was investigated, and the structure of surjective isometries between function spaces was characterized. For the complex linear space C^1([0,1]) of all continuously differentiable complex valued functions on the closed unit interval [0,1], we have characterized surjective, not necessarily linear, isometries on C^1([0,1]) with respect to some norms; the space C1([0,1]) has many norms, and the proof of the characterization of isometries were given to each norm. In our argument, we introduce a notion to unify these norms, and give a unified proof to characterize surjective isometries on C1([0,1]).

Academic Significance and Societal Importance of the Research Achievements

乗法的スペクトル保存写像の研究は2000年頃に始まり,この10年の間に世界的な競争が生まれ活発な研究がなされたきた.本研究では特に可換Banach環において,世界をリードする研究成果をあげることに成功した.また.スペクトル保存写像に関連して,保存問題としての等距離写像の研究を始めた.等距離写像は少なくとも1932年には研究がなされ現在も継続する分野である.しかし線形とは限らない等距離写像はほとんど研究されていないようである.古典的問題でありながら,世界の先端をゆく研究が本研究において始められた.

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

    (96 results)

All 2019 2018 2017 2016 2015 Other

All Int'l Joint Research (5 results) Journal Article (22 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 22 results,  Acknowledgement Compliant: 4 results,  Open Access: 3 results) Presentation (66 results) (of which Int'l Joint Research: 29 results,  Invited: 21 results) Funded Workshop (3 results)

  • [Int'l Joint Research] The University of Memphis(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] The University of Memphis(米国)

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

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] University of Szeged(Hungary)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] Department of Mathematical Sciences/University of Montana(米国)

    • Related Report
      2015 Research-status Report
  • [Journal Article] Surjective isometries on a Banach space of analytic functions on the open unit disc2018

    • Author(s)
      T. Miura and N. Niwa
    • Journal Title

      Nihonkai Math. J.

      Volume: 29

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Norms on C1([0,1]) and their isometries2018

    • Author(s)
      Kazuhiro Kawamura, Hironao Koshimizu and Takeshi Miura
    • Journal Title

      Acta Scientiarum Mathematicarum (Szeged)

      Volume: 84 Issue: 1-2 Pages: 239-261

    • DOI

      10.14232/actasm-017-331-0

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Peculiar homomorphisms on algebras of vector valued maps2018

    • Author(s)
      Osamu Hatori, Shiho Oi and Hiroyuki Takagi
    • Journal Title

      Studia Mathematica

      Volume: 242 Issue: 2 Pages: 141-163

    • DOI

      10.4064/sm8799-6-2017

    • Description
      Publish online
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Isometries on Banach algebras of vector-valued maps2018

    • Author(s)
      O. Hatori and S. Oi
    • Journal Title

      Acta Sci. Math.

      Volume: 84 Issue: 1-2 Pages: 151-183

    • DOI

      10.14232/actasm-017-558-6

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hermitian operators and isometries on Banach algebras of continuous maps with values in a unital commutative C*-algebra,2018

    • Author(s)
      O. Hatori
    • Journal Title

      J. Function Spaces

      Volume: 2018 Pages: 14-14

    • DOI

      10.1155/2018/8085304

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Surjective isometries on the Banach space of continuously differentiable functions2017

    • Author(s)
      Takeshi Miura and Hiroyuki Takagi
    • Journal Title

      Contemp. Math.

      Volume: 687 Pages: 181-192

    • DOI

      10.1090/conm/687/13787

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Real-linear surjective isometries between function spaces2017

    • Author(s)
      Kazuhiro Kawamura and Takeshi Miura
    • Journal Title

      Topology Appl.

      Volume: 226 Pages: 66-85

    • DOI

      10.1016/j.topol.2017.05.002

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Semigroup operations distributed by the ordinary multiplication or addition on the real numbers2017

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

      Publ Math. Debrecen

      Volume: 91 Issue: 3-4 Pages: 297-307

    • DOI

      10.5486/pmd.2017.7560

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Spectral conditions for Jordan *-homomorphisms on operator algebras2017

    • Author(s)
      Osamu Hatori and Lajos Molnar
    • Journal Title

      Studia Mathematica

      Volume: 236 Issue: 2 Pages: 101-126

    • DOI

      10.4064/sm8393-8-2016

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Examples and applications of generalized gyrovector spaces2017

    • Author(s)
      Osamu Hatori
    • Journal Title

      Results in Mathematics

      Volume: 71 Issue: 1-2 Pages: 295-317

    • DOI

      10.1007/s00025-016-0576-1

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Commuting pairs of self-adjoint elements in C*-algebras2017

    • Author(s)
      Osamu Hatori
    • Journal Title

      Mathematica Slovaca

      Volume: 67 Issue: 1 Pages: 209-212

    • DOI

      10.1515/ms-2016-0259

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] Extension of isometries in the generalized gyrovector spaces of the positive cone2017

    • Author(s)
      Osamu Hatori
    • Journal Title

      Contemporary Mathematics

      Volume: 687 Pages: 145-156

    • DOI

      10.1090/conm/687/13728

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Hermitian operators on Banach algebras of vector-valued Lipschitz maps2017

    • Author(s)
      Osamu Hatori and Shiho Oi
    • Journal Title

      Journal of Mathematical Analysis and its Applications

      Volume: 452 Issue: 1 Pages: 378-387

    • DOI

      10.1016/j.jmaa.2017.03.015

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Peculiar homomorphisms on algebras of vector-valued continuously differentiable maps2017

    • Author(s)
      Osamu Hatori, Shiho Oi and Hiroyuki Takaagi
    • Journal Title

      Linear and Nonlinear Analysis

      Volume: 3

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A characterization of multipliers of a Lau algebra constructed by semisimple commutative Banach algebras2016

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

      Taiwanese Journal of Mathematics

      Volume: 20 Issue: 6 Pages: 1401-1415

    • DOI

      10.11650/tjm.20.2016.7386

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Surjective isometries between function spaces2015

    • Author(s)
      Takeshi Miura
    • Journal Title

      Contemp. Math.

      Volume: 645

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Mappings onto multiplicative subsets of function algebras and spectral properties of their products2015

    • Author(s)
      Takeshi Miura and Thomas Tonev
    • Journal Title

      Ark. Math.

      Volume: 53 Issue: 2 Pages: 329-358

    • DOI

      10.1007/s11512-014-0210-y

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Commutative semigroup operations on R^2 compatible with the ordinary additive operation,2015

    • Author(s)
      Seiji Anbe, Sin-Ei Takahasi, Makoto Tsukada and Takeshi Miura
    • Journal Title

      Linear Nonlinear Anal.

      Volume: 1

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Isometries on the special unitary group2015

    • Author(s)
      Osamu Hatori
    • Journal Title

      Contemp. Math.

      Volume: 645 Pages: 119-134

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] Generalized gyrovector spaces and a Mazur-Ulam theorem2015

    • Author(s)
      Toshikazu Abe and Osamu Hatori
    • Journal Title

      Publ. Math. Debrecen

      Volume: 87 Issue: 3-4 Pages: 393-413

    • DOI

      10.5486/pmd.2015.7234

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] Commuting pairs of normal operators2015

    • Author(s)
      Osamu Hatori
    • Journal Title

      Nihonkai Math. J.

      Volume: 26

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] Maps on the sphere of the algebras of matrices2015

    • Author(s)
      Osamu Hatori
    • Journal Title

      Nihonkai Math. J.

      Volume: 26

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Presentation] C^1([0,1])上の種々のノルムに関する等距離写像2019

    • Author(s)
      川村 一宏,古清水 大直,三浦 毅
    • Organizer
      日本数学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Generalized bi-circular idempotents on C^1([0,1])2019

    • Author(s)
      F. Botelho,三浦 毅
    • Organizer
      日本数学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 正則関数からなるBanach空間上の全射等距離写像について2019

    • Author(s)
      丹羽 典朗,三浦 毅
    • Organizer
      日本数学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 正則関数のなすLipschitz空間とその上の全射等距離写像2019

    • Author(s)
      三浦 毅
    • Organizer
      つくばセミナー
    • Related Report
      2018 Annual Research Report
  • [Presentation] 2-local maps on spaces of continuous functions2019

    • Author(s)
      羽鳥 理,大井 志穂
    • Organizer
      日本数学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Surjective isometries on a Banach space of analytic functions on the open unit disc2018

    • Author(s)
      三浦 毅,丹羽 典朗
    • Organizer
      関数環研究集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Surjective isometries on a Lipschitz space of analytic functions on the open unit disc2018

    • Author(s)
      羽鳥 理,三浦 毅
    • Organizer
      関数環研究集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 関数空間上の全射等距離写像2018

    • Author(s)
      三浦 毅
    • Organizer
      日本数学会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Isometries on a Lipschitz space of analytic functions2018

    • Author(s)
      T. Miura
    • Organizer
      Workshop on the Frontiers between Functional Analysis and Algebra
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Isometries on a Lipschitz space of analytic functions2018

    • Author(s)
      T. Miura
    • Organizer
      Seminar in Departamento de Analisis Matematico
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 関数環値C^1空間とその上の等距離写像2018

    • Author(s)
      三浦 毅
    • Organizer
      米沢数学セミナー
    • Related Report
      2018 Annual Research Report
  • [Presentation] Isometries on C^1 space on [0,1] with values in a uniform algebras2018

    • Author(s)
      T. Miura
    • Organizer
      International Conference on Mathematics and Statistics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Surjective isometries on Banach algebras of Lipschitz maps2018

    • Author(s)
      O. Hatori
    • Organizer
      日本数学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Hermitian operators and isometries on Banach algebras of continuous maps with vaues in unital C*-algebras2018

    • Author(s)
      O. Hatori
    • Organizer
      Recent Trends in Operator Theory and Applications
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Isometries on algebras of continuous maps with values in unital C*-algebras2018

    • Author(s)
      O. Hatori
    • Organizer
      International Conference on Mathematics and Statistics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A geometric inequality and its application2018

    • Author(s)
      O. Hatori
    • Organizer
      Seminar in Department of Mathematica Analysis
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A geometric inequality and its application2018

    • Author(s)
      O. Hatori
    • Organizer
      Workshop on the frontiers between functional analysis and algebra
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A geometric inequality and isometries on the positive cone2018

    • Author(s)
      T. Abe, O. Hatori
    • Organizer
      日本数学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] A Problem on isometries on positive cones and a geometric inequality2018

    • Author(s)
      O. Hatori
    • Organizer
      Seminar at the Departments of Analysis at the University of Szeged
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A Problem on isometries on positive cones and a geometric2018

    • Author(s)
      O. Hatori
    • Organizer
      Seminar at the Budapest University of Technology and Economics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 2-local surjective isometries on some spaces of continuous functions2018

    • Author(s)
      O. Hatori
    • Organizer
      Conference on Function Algebras 2018
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 2-local isometries on spaces of continuous functions2018

    • Author(s)
      O. Hatori
    • Organizer
      Research on isometries as preserver problems and related topics
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Norms and isometries on C^1([0,1])2017

    • Author(s)
      Takeshi Miura
    • Organizer
      Methods in Operator Theory and Applications
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Norms on C^1([0,1]) and their surjective isometries2017

    • Author(s)
      Takeshi Miura
    • Organizer
      Preservers Everywhere (Bolyai Institute, Szeged)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] ベクトル値のC^1空間とその上の等距離写像2017

    • Author(s)
      三浦 毅
    • Organizer
      米沢数学セミナー(山形大学工学部)
    • Related Report
      2017 Research-status Report
  • [Presentation] C^1([0,1])上の等距離写像2017

    • Author(s)
      三浦 毅,高木 啓行
    • Organizer
      日本数学会(山形大学)
    • Related Report
      2017 Research-status Report
  • [Presentation] Isometries on C^1-spaces of C(X)-valued functions2017

    • Author(s)
      Takeshi Miura
    • Organizer
      2017 Conference on Function Algebras (Nihon University)
    • Related Report
      2017 Research-status Report
  • [Presentation] Isometries on uniform algebra valued C^1-spaces2017

    • Author(s)
      三浦 毅
    • Organizer
      等距離写像理論と保存問題の多様な視点からの研究 (京都大学数理解析研究所)
    • Related Report
      2017 Research-status Report
  • [Presentation] Lumer's method for certain admissible quadruples2017

    • Author(s)
      Osamu Hatori
    • Organizer
      Methods in Operator Theory and Applications (University of Memphis)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Homomorphisms and isometries on Banach algebras of vector-valued maps2017

    • Author(s)
      Osamu Hatori
    • Organizer
      Preservers everywhere (University of Szeged)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Isometries on admissible quadruples2017

    • Author(s)
      Osamu Hatori
    • Organizer
      第91回米沢数学セミナー(山形大学工学部)
    • Related Report
      2017 Research-status Report
  • [Presentation] A geometric inequality on the poisive cone and an application2017

    • Author(s)
      Osamu Hatori
    • Organizer
      Positivity IX (University of Alberta)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Peculiar homomorphisms on admissible quadruples2017

    • Author(s)
      Osamu Hatori
    • Organizer
      日本数学会秋季綜合分科会 (山形大学理学部 山形市)
    • Related Report
      2017 Research-status Report
  • [Presentation] On Example 8 of the paper of Jarosz and Pathak2017

    • Author(s)
      Osamu Hatori
    • Organizer
      関数環研究集会 (日本大学薬学部)
    • Related Report
      2017 Research-status Report
  • [Presentation] Isometries on admissible quadruples2017

    • Author(s)
      Osamu Hatori
    • Organizer
      RIMS共同研究(公開型)等距離写像理論と保存問題の多様な視点からの研究
    • Related Report
      2017 Research-status Report
  • [Presentation] Surjective isometries on Banach algebras of Lipschitz maps2017

    • Author(s)
      Osamu Hatori
    • Organizer
      日本数学会2018年度年会(東京大学)
    • Related Report
      2017 Research-status Report
  • [Presentation] C^1([0,1])上の種々のノルムに関する等距離写像,2017

    • Author(s)
      三浦 毅
    • Organizer
      第4回山陰基礎論・解析学研究集会
    • Place of Presentation
      国際ファミリープラザ
    • Related Report
      2016 Research-status Report
  • [Presentation] Comparison of the gyrocentroid and the geometric mean defined by Honma2017

    • Author(s)
      羽鳥 理
    • Organizer
      つくばセミナー
    • Place of Presentation
      筑波大学
    • Related Report
      2016 Research-status Report
  • [Presentation] GBPs=BCPs?2017

    • Author(s)
      三浦 毅
    • Organizer
      つくばセミナー
    • Place of Presentation
      筑波大学
    • Related Report
      2016 Research-status Report
  • [Presentation] 関数空間上の等距離写像の性質2017

    • Author(s)
      三浦 毅
    • Organizer
      日本数学科
    • Place of Presentation
      首都大学東京
    • Related Report
      2016 Research-status Report
  • [Presentation] 積とスペクトル半径を用いた単位的半単純可換Banach環の間に定義された実多元環として同形な写像の特徴づけについて,2017

    • Author(s)
      冨樫 瑠美,三浦 毅,本間 大
    • Organizer
      日本数学会
    • Place of Presentation
      首都大学東京
    • Related Report
      2016 Research-status Report
  • [Presentation] I型半単純可換Banach環の分類について2017

    • Author(s)
      髙橋 眞映,三浦 毅,高木 啓行,井上 純治
    • Organizer
      日本数学会
    • Place of Presentation
      首都大学東京
    • Related Report
      2016 Research-status Report
  • [Presentation] C^1[0,1]上の等距離写像について2016

    • Author(s)
      三浦 毅
    • Organizer
      つくばセミナー
    • Place of Presentation
      筑波大学
    • Year and Date
      2016-03-07
    • Related Report
      2015 Research-status Report
  • [Presentation] ある不等式とその応用2016

    • Author(s)
      羽鳥 理
    • Organizer
      つくばセミナー
    • Place of Presentation
      筑波大学
    • Year and Date
      2016-03-07
    • Related Report
      2015 Research-status Report
  • [Presentation] ジャイロ構造を持つ空間について2016

    • Author(s)
      阿部 敏一,羽鳥 理
    • Organizer
      関東作用素論セミナー
    • Place of Presentation
      東京理科大学神楽坂キャンパス
    • Year and Date
      2016-01-23
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Homomorphisms on vector-valued Banach function algebras2016

    • Author(s)
      Osamu Hatori, Shiho Oi and Hiroyuki Takagi
    • Organizer
      米沢数学セミナー
    • Place of Presentation
      山形大学工学部
    • Related Report
      2016 Research-status Report
  • [Presentation] On isometries of vector-valued Lipschitz algebras2016

    • Author(s)
      Osamu Hatori and Shiho Oi
    • Organizer
      米沢数学セミナー
    • Place of Presentation
      山形大学工学部
    • Related Report
      2016 Research-status Report
  • [Presentation] Isometries on algebras of Lipschitz functions with values in commutative $C^*$-algebras2016

    • Author(s)
      Osamu Hatori (Joint work with Shiho Oi)
    • Organizer
      20th conference of the international linear algebra society
    • Place of Presentation
      KU Leuven, Auditorium Jean Monnet
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Surjective isometries on C^1[0,1] with respect to several norms2016

    • Author(s)
      Takeshi Miura
    • Organizer
      Researches on isometries from various viewpoints (RIMS Workshop)
    • Place of Presentation
      RIMS, Kyoto University
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Lau algebra of type I defined by semi simple commutative Banach algebras,2016

    • Author(s)
      Sin-Ei Takahasi, Hiroyuki Takagi and Takeshi Miura
    • Organizer
      Researches on isometries from various viewpoints (RIMS Workshop)
    • Place of Presentation
      RIMS, Kyoto University
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Peculiar homomorphisms on commutative Banach algebras of vector-valued functions2016

    • Author(s)
      Osamu Hatori, Shiho Oi and Hiroyuki Takagi
    • Organizer
      Reseaches on isometries from various viewpoints
    • Place of Presentation
      RIMS, Kyoto University
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Peculiar isomorphisms on algebras of Lipsichtz maps with values in uniform algebras2016

    • Author(s)
      Osamu Hatori, Shiho Oi and Hiroyuki Takagi
    • Organizer
      Workshop in Nara University of Education 2016
    • Place of Presentation
      Nara Chamber of Commerce and Industry
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Isometries between function spaces on the unit circle2016

    • Author(s)
      Takeshi Miura
    • Organizer
      Preserver problems and their related topics
    • Place of Presentation
      College of Science and Technology, Nihon University
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Commuting pairs of normal operators2016

    • Author(s)
      Osamu Hatori
    • Organizer
      Presrver Problems and Their Related Topics
    • Place of Presentation
      College of Science and Technology, Nihon University
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Surjective isometries on C^1([0,1]) with respect to a norm derived from plane figures2016

    • Author(s)
      Kazuhiro Kawamura, Hironao Koshimizu and Takeshi Miura
    • Organizer
      Conference on Function Algebras
    • Place of Presentation
      Faculty of Engineering, Ibaraki University
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Commutativity of self-adjoint elements2016

    • Author(s)
      Osamu Hatori
    • Organizer
      Conference on Function Algebras
    • Place of Presentation
      Faculty of Engineering, Ibaraki University
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Commutativity for C^*-algebras via gyrogroup operations2016

    • Author(s)
      Toshikazu Abe and Osamu Hatori
    • Organizer
      Conference on Function Algebras
    • Place of Presentation
      Faculty of Engineering, Ibaraki University
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Banach-Stone型のいくつかの定理2015

    • Author(s)
      川村 一宏,三浦 毅
    • Organizer
      関数環研究集会
    • Place of Presentation
      新潟大学駅南キャンパス
    • Year and Date
      2015-12-20
    • Related Report
      2015 Research-status Report
  • [Presentation] 単位球面上の等距離写像に関する一つの注意2015

    • Author(s)
      羽鳥 理
    • Organizer
      関数環研究集会
    • Place of Presentation
      新潟大学駅南キャンパス
    • Year and Date
      2015-12-20
    • Related Report
      2015 Research-status Report
  • [Presentation] Positive cones and GGV2015

    • Author(s)
      Osamu Hatori
    • Organizer
      Research on structure of operators by order and geometry with related topics
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2015-11-10
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Isometries on the substructure of unital C*-algebras2015

    • Author(s)
      羽鳥 理
    • 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
    • Year and Date
      2015-10-26
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Surjective isometries on C^1[0,1]2015

    • Author(s)
      Takeshi Miura
    • Organizer
      Fall Southeastern Sectional Meeting of American Mathematical Society
    • Place of Presentation
      University of Memphis
    • Year and Date
      2015-10-18
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] An application of a Mazur Ulam theorem on generalized gyro vector spaces2015

    • Author(s)
      Osamu Hatori
    • Organizer
      Special Session on Advances in Operator Theory and Applications
    • Place of Presentation
      University of Memphis
    • Year and Date
      2015-10-17
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Isometries on substructures of function algebras and operator algebras2015

    • Author(s)
      羽鳥 理
    • Organizer
      日本数学会 特別講演
    • Place of Presentation
      京都産業大学
    • Year and Date
      2015-09-15
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Examples of generalized gyro vector spaces2015

    • Author(s)
      Osamu Hatori
    • Organizer
      The Fifth International Symposium on Banach and function spaces
    • Place of Presentation
      九州工業大学
    • Year and Date
      2015-09-05
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Gyrogroups and applications to the Thompson isometries2015

    • Author(s)
      Osamu Hatori
    • Organizer
      International Conference Preserver Problems and Related Topics
    • Place of Presentation
      新潟大学駅南キャンパス
    • Year and Date
      2015-06-28
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Funded Workshop] Preserver Problems and Their Related Topics2016

    • Place of Presentation
      College of Science and Technology, Nihon University
    • Year and Date
      2016-11-08
    • Related Report
      2016 Research-status Report
  • [Funded Workshop] Workshop in Nara University of Education 20162016

    • Place of Presentation
      Nara Chamber of Commerce and Industry
    • Year and Date
      2016-11-04
    • Related Report
      2016 Research-status Report
  • [Funded Workshop] Researches on isometries from various viewpoints2016

    • Place of Presentation
      RIMS, Kyoto University
    • Year and Date
      2016-10-31
    • Related Report
      2016 Research-status Report

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

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