HAYASHI Tomohiro

写真a

Affiliation Department

Department of Electrical and Mechanical Engineering
Department of Computer Science

Title

Associate Professor

External Link

Degree

  • Science ( 0001.01   Tohoku University )

Research Areas

  • Natural Science / Mathematical analysis

From School

  • Tohoku University   Faculty of Science   Graduated

    - 1994.03

      More details

    Country:Japan

From Graduate School

  • Tohoku University   Graduate School, Division of Natural Science   Mathematics   Doctor's Course   Completed

    - 2000.03

      More details

    Country:Japan

External Career

  • 九州大学大学院数理学研究院   助手

    2002.04 - 2006.03

      More details

    Country:Japan

  • 日本学術振興会特別研究員(PD)   日本学術振興会特別研究員

    2000.04 - 2002.03

      More details

    Country:Japan

Professional Memberships

  • Mathematical Society of Japan

 

Research Career

  • Study on von Neumann algebras

    (not selected)  

    Project Year:

Papers

  • On Conjugacy of Subalgebras of Graph C*-algebras. Reviewed International coauthorship International journal

    Tomohiro Hayashi, Jeong Hee Hong, Sophie Emma Mikkelsen, Wojciech Szymański

    Geometric Methods in Physics XXXVII (Trends in Mathematics)   163 - 173   2019.11

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1007/978-3-030-34072-8_17

    Other Link: https://link.springer.com/chapter/10.1007/978-3-030-34072-8_17

  • On a norm inequality for a positive block-matrix. Reviewed International journal

    Tomohiro Hayashi

    linear algebra and its applications   566   86 - 97   2019.04

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier  

    DOI: 10.1016/j.laa.2018.12.027

  • On a conjecture of the norm Schwarz inequality. Reviewed International journal

    Tomohiro Hayashi

    Annals of Functional Analysis   8 ( 3 )   377 - 385   2017.04

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Duke university press  

    DOI: 10.1215/20088752-2017-0003

  • On endomorphisms of the Cuntz algebra which preserve the canonical UHF-subalgebra, II Reviewed International coauthorship International journal

    Journal of Functional Analysis   272 ( 2 )   759 - 775   2017.01

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier  

  • On normalizers of C*-subalgebras in the Cuntz algebra O n. II. Reviewed International coauthorship International journal

    Banach Journal of Mathematical Analysis   9 ( 4 )   379 - 383   2015.12

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Duke University Press  

  • A note on the Jensen inequality for self-adjoint operators, II. Reviewed

    Tomohiro Hayashi

    JOURNAL OF THE MATHEMATICAL SOCIETY OF JAPAN   66 ( 1 )   111 - 121   2014.01

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  • On normalizers of C∗-subalgebras in the Cuntz algebra On Reviewed

    Tomohiro Hayashi

    JOURNAL OF OPERATOR THEORY   69 ( 2 )   525 - 533   2013.11

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  • A note on the Jensen inequality for self-adjoint operators. Reviewed

    Tomohiro Hayashi

    JOURNAL OF THE MATHEMATICAL SOCIETY OF JAPAN   62 ( 3 )   949 - 961   2010.04

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  • Non-commutative arithmetic-geometric mean inequality Reviewed

    Tomohiro Hayashi

    PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY   137 ( 10 )   3399 - 3406   2009.04

     More details

    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  • A characterization of the operator-valued triangle equality Reviewed

    Tsuyoshi Ando, Tomohiro Hayashi

    JOURNAL OF OPERATOR THEORY   58 ( 2 )   463 - 468   2007.04

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

display all >>

Presentations

  • On the norm Schwarz inequality Invited International conference

    Tomohiro Hayashi

    2017 International Conference on Matrix Inequalities and Matrix Equations 

     More details

    Event date: 2017.06

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Shanghai, China  

  • On normalizers of C*-subalgebras in the Cuntz algebra O_n International conference

    Tomohiro Hayashi

    Mathematics colloquia 

     More details

    Event date: 2014.09

    Language:English   Presentation type:Oral presentation (invited, special)  

  • クンツ環の部分環の正規化群について

    Tomohiro Hayashi

    2013年作用素論・作用素環論研究集会  吉田 裕亮(お茶の水女子大学)、山崎 丈明(東洋大学)

     More details

    Event date: 2013.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:お茶の水女子大学  

  • An order-like relation induced by the Jensen inequality International conference

    Tomohiro Hayashi

    ILAS 2013 meeting  International Linear Algebra Society

     More details

    Event date: 2013.06

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Providence, USA  

  • Jensen不等式から定まるある二項関係について

    林倫弘

    作用素論・作用素環論研究集会  瀬尾祐貴 吉田裕亮

     More details

    Event date: 2012.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪教育大学天王寺キャンパス  

  • An order-like relation induced by the Jensen inequality International conference

    Tomohiro Hayashi

    KOREA OPERATOR THEORY AND ITS APPLICATIONS CONFERENCE 

     More details

    Event date: 2012.06

    Language:English   Presentation type:Oral presentation (general)  

Scientific Research Funds Acquisition Results

  • Study of subalgebras and endomorphisms on the Cuntz algebra

    2013.04 - 2016.03

    Grant-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research(C)

    Tomohiro Hayashi

 

Committee Memberships

  • 日本数学会   雑誌「数学通信」非常任編集委員  

    2017.02 - 2018.02   

      More details

    Committee type:Academic society

  • 日本数学会   雑誌「数学通信」編集委員  

    2016.03 - 2017.02   

      More details

    Committee type:Academic society