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OSADA Masayuki  長田 正幸

ORCIDConnect your ORCID iD *help
… Alternative Names

長田 正幸  オサダ マサユキ

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Researcher Number 10107229
Affiliation (based on the past Project Information) *help 2004: Hokkaido Univ.of Education, Sapporo Campus, Assistant Professor, 教育学部・札幌校, 助教授
2003: 北海道教育大学, 教育学部札幌校, 助教授
2002: Hokkaido Univ. of Education, 教育学部・札幌校, 教授
2001 – 2002: 北海道教育大学, 教育学部・札幌校, 助教授
2000: Hokkaido Univ.of Education, 教育学部・札幌校, 教授 … More
1998 – 1999: Sapporo College, Assistant Professor, 教育学部札幌校, 助教授
1995 – 1999: 北海道教育大学, 教育学部・札幌校, 助教授
1991: 北海道教育大学, 教育学部・札幌分校, 助教授 Less
Review Section/Research Field
Principal Investigator
解析学
Except Principal Investigator
Basic analysis / 解析学 / Basic analysis / Algebra
Keywords
Principal Investigator
Holder type inequality / Schur product / operator radius / unitary rho dilation / 作用素ノルム / 数域半径 / 有界線形作用素 / ヒルベルト空間 / Holder型不等式 / Ho^<・・>lder型不等式 … More / Schur積 / 作用素半径 / ユニタリρ拡大 / minimally thin / fine topology / Kuramochi boundary / Kuramochi compacitification / Martin boundary / Martin compactification / Riemann surface … More
Except Principal Investigator
Numerical radius / Numerical range / Weakly unitarily invariant norm / Aluthge transformation / Spectrum / λ-Aluthge transformation / Operator radius / Approximant / Norm Inequality / Operetor radius / Aluthge transform / Absolute norm / q-numerical range / C-numerical range / rank reducing / Square root of matrix / Majorization / Spectral norm / ρ-contraction / operator radius / λ- Aluthge transformation / Rank reducing / Trace / numerical range / Golden-Thompson inequality / positive semidefinite / trace / Structure theorem of complete local rings / big Cohen-Macaulay modules / Witt ring / Bertini Theorem / p-adic representation / Frobenius map / Homological conjectures / Noetherian local ring / Witt環 / Frobenius写像 / p進展開 / Witt定理 / Bertini定理 / 完備局所環の構造定理 / Big Cohen-Macaulay加群 / ホモロジー予想 / ネター局所環 / Spectral radius / Convex function / Ho lder's inequality / Hadamard product / Operator redius / Schur積 / dual norm / 数域半径 / 作用素ノルム / シュワ-積 Less
  • Research Projects

    (8 results)
  • Co-Researchers

    (10 People)
  •  Research of Matrix Inequalities and Norm Inequalities

    • Principal Investigator
      OKUBO Kazuyoshi
    • Project Period (FY)
      2003 – 2004
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Basic analysis
    • Research Institution
      HOKKAIDO UNIVERSITY OF EDUCATION
  •  Research of Matrix Inequalities and Norm Inequalities on Matrices Algebra

    • Principal Investigator
      OKUBO Kazuyoshi
    • Project Period (FY)
      2001 – 2002
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Basic analysis
    • Research Institution
      HOKKAIDO UNIVERSITY OF EDUCATION
  •  Research of Norm Inequalities on Matices Algebra

    • Principal Investigator
      OKUBO Kazuyoshi
    • Project Period (FY)
      1999 – 2000
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Basic analysis
    • Research Institution
      HOKKAIDO UNIVERSITY OF EDUCATION
  •  STUDY OF NOETHERIAN LOCAL RINGS IN COMMUTAIVE ALGEBRA

    • Principal Investigator
      NISHIMURA Jun-ichi
    • Project Period (FY)
      1998 – 1999
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Algebra
    • Research Institution
      Hokkaido University of Education
  •  Research of inequalities of matrix algebra using analytic methodPrincipal Investigator

    • Principal Investigator
      OSADA Masayuki, 大久保 和義
    • Project Period (FY)
      1997 – 1998
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      解析学
    • Research Institution
      HOKKAIDO UNIVERSITY OF EDUCATION
  •  複素平面上の単位円内のfine topologyについての研究Principal Investigator

    • Principal Investigator
      長田 正幸
    • Project Period (FY)
      1996
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      解析学
    • Research Institution
      Hokkaido University of Education
  •  行列空間上の作用素に関する不等式の研究

    • Principal Investigator
      大久保 和義
    • Project Period (FY)
      1995
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      解析学
    • Research Institution
      Hokkaido University of Education
  •  行列空間上のシュワ-積の誘導ノルムに関する研究

    • Principal Investigator
      OKUBO Kazuyoshi
    • Project Period (FY)
      1991
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      解析学
    • Research Institution
      Hokkaido University of Education
  • 1.  OKUBO Kazuyoshi (80113661)
    # of Collaborated Projects: 8 results
    # of Collaborated Products: 0 results
  • 2.  SAKURADA Kuninori (30002463)
    # of Collaborated Projects: 8 results
    # of Collaborated Products: 0 results
  • 3.  HASEGAWA Izumi (50002473)
    # of Collaborated Projects: 7 results
    # of Collaborated Products: 0 results
  • 4.  KOMURO Naoto (30195862)
    # of Collaborated Projects: 6 results
    # of Collaborated Products: 0 results
  • 5.  NISIMURA Jun-ichi (00025488)
    # of Collaborated Projects: 4 results
    # of Collaborated Products: 0 results
  • 6.  福井 昌樹 (20002628)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 7.  吹田 信之 (90016022)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 8.  佐藤 武義 (00002759)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 9.  OKUYAMA Tetsuro (60128733)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 10.  KITAYAMA Masashi (80169888)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results

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