NEGAMI Seiya

Affiliation

Faculty of Environment and Information Sciences, Division of Social Environment and Information

Job Title

Professor

Date of Birth

1957

Research Fields, Keywords

Topological Graph Theory, Discrete Mathematics, Topology, Graphs on surfces, Spatial graphs, Planar Cover Conjecture

Mail Address

E-mail address

Related SDGs




写真a

Profile 【 display / non-display

  • A mathematician known as a pioneer of topological graph theory in Japan, exploring new forms of mathematics education with the keyword "mathematics without calculation". He supervised mathematics in movies, television shows and manga and wrote many books.

Graduating School 【 display / non-display

  •  
    -
    1979

    Tokyo Institute of Technology   Faculty of Science   Department of Mathematics   Graduated

Graduate School 【 display / non-display

  •  
    -
    1983

    Tokyo Institute of Technology  Graduate School, Division of Science and Engineering  Information Sciences  Doctor Course  Unfinished course

Degree 【 display / non-display

  • Doctor of Science -  Tokyo Institute of Technology

  • Master of Science -  Tokyo Institute of Technology

Campus Career 【 display / non-display

  • 2021.04
    -
    Now

    Duty   Yokohama National UniversityFaculty of Environment and Information Sciences   Division of Social Environment and Information   Professor  

  • 2019.04
    -
    2021.03

    Duty   Yokohama National UniversityOfficer   Executive Director (Vice President)  

  • 2011.04
    -
    2019.03

    Duty   Yokohama National UniversityFaculty of Environment and Information Sciences   Division of Social Environment and Information   Professor  

  • 2002.10
    -
    2011.03

    Duty   Yokohama National UniversityCollege of Education and Human Sciences   Professor  

  • 1997.10
    -
    2002.09

    Duty   Yokohama National UniversityCollege of Education and Human Sciences   Associate Professor  

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External Career 【 display / non-display

  • 1983.05
    -
    1988.03

    Tokyo Institute of Technology,   Faculty of Sciences, Department of Information Sciences   Research Assistant  

Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display

  • Foundations of mathematics/Applied mathematics

  • Geometry

Qualification acquired 【 display / non-display

  • Second Kind of High School Teacher License

 

Research Career 【 display / non-display

  • Study on reforming curriculums with discrete mathematics

    Project Year:  -   

  • Overall Study on Topological Graph Theory

    Project Year:  -   

Books 【 display / non-display

  • Handbook of Graph Theory, Second Edition

    Jonathan L. Gross, Jay Yellen, Ping Zhang, Seiya Negami 他 (Part: Joint Work , Range: Section 7.8: Triangulations, pp.876-901 )

    Chapman and Hall / CRC Press  2014.02 ISBN: 978-143988018

  • Book that enables us see 4-dimension

    (Part: Single Work )

    2012.09 ISBN: 978-453578673

  • Enjoy! Mathematics

    (Part: Editor )

    2011.09

  • Handbook of Graph Theory

    Jonathan L. Gross, Jay Yellen, Seiya Negami 他 (Part: Joint Work , Range: Section 7.8: Triangulations, pp.737-760 )

    CRC press  2004.06 ISBN: 9780203490204

Thesis for a degree 【 display / non-display

  • Uniqueness and faithfulness of embedding of graphs into surfaces

    Seiya Negami 

      1985.10  [Refereed]

    No Setting   Single Work

  • A characterization of 3-connected graphs containing a given graph and its applications

    Seiya Negami 

      1981.03  [Refereed]

    No Setting   Single Work

Papers 【 display / non-display

  • Diagonal flips in plane graphs with triangular and quadrangular faces

    Naoki Matsumoto, Atsuhiro Nakamoto, Seiya Negami

    Discrete Applied Mathematics   283   292 - 305   2020  [Refereed]

    Joint Work

  • Recursive formulas for beans functions of graphs

    Kengo Enami. Seiya Negami

    Theory and Applications of Graphs   7 ( 5 )   Article 3 - 11p.   2020  [Refereed]

    Joint Work

  • Stable embeddings of graphs on closed surfaces with respect to minimum length

    Naoki Mochizuki, Seiya Negami

    Acta Mathematica Universitatis Comenianae. New Series   88 ( 2 )   293 - 304   2019  [Refereed]

    Joint Work

  • A generating theorem of punctured surface triangulations with inner degree at least 4

    María-José Chávez, Seiya Negami, Antonio Quintero, María Trinidad Villar-Liñán

    Mathematica Slovaca   69 ( 5 )   969 - 978   2019  [Refereed]

    Joint Work

    DOI

  • A Report on Development of CBT Using Tablet Device for Evaluation Considering the Articulation between High School and University:Possibility of Mathematical Problems for CBT

    NISHIMURA Keiichi, YASUNO Fumiko, NEGAMI Seiya, SOKEI Ryoken, TAKAHASHI Hiroaki, ITOH Shinya, ITOH … Show more authors

    Proceedings of the Annual Meeting of Japan Society for Science Education ( Japan Society for Science Education )  42 ( 0 )   119 - 120   2018

    Joint Work

    DOI CiNii

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Review Papers 【 display / non-display

  • Handbook of Graph Theory

    CRC press     737 - 760   2003

    Introduction and explanation (others)   Joint Work

Grant-in-Aid for Scientific Research 【 display / non-display

  • Grant-in-Aid for Scientific Research(B)

    Project Year: 2019.04  -   

  • Grant-in-Aid for Scientific Research(A)

    Project Year: 2017.04  -   

  • Grant-in-Aid for Scientific Research(B)

    Project Year: 2017.04  -  2020.03 

  • Grant-in-Aid for Scientific Research(B)

    Project Year: 2013.04  -  2017.03  Investigator(s): Seiya Negami

  • Grant-in-Aid for Scientific Research(A)

    Project Year: 2013.04  -  2017.03 

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Presentations 【 display / non-display

  • Approach to huge graph analysis using graph coverings

    Seiya Negami  [Invited]

    2020.12.04   Meiji University, Meiji institute for Advanced Study of Mathematical Sciences

  • On discontinuous points of beans functions

    Seiya Negami

    32th workshop on topological graph theory  (Yokohama National University)  2020.11.13   Research Center for Topological Graph Theory

  • Beans Functions, a mathematical model for social distance

    Seiya Negami  [Invited]

    ICON-SMART - International Conference On Natural Science, Mathematics, Applications, Research and Technology  (Sam Ratulangi University, Manado, Indonesia (ZOOM))  2020.10.22   Sam Ratulangi University

  • Approach to huge graph analysis using graph coverings

    Seiya Negami

    YNU-PSU Mathematical Seminar 2020  2020.02.11   Yokohama National University, Faculty of Environment and Information Sciences

  • Looseness of triangulations on closed surfaces having polyhedral frames

    Seiya Negami

    31th workshop on topological graph theory  (Yokohama National University)  2019.11.15   Research Center for Topological Graph Theory

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Social Contribution(Extension lecture) 【 display / non-display

  • Lecture at Sam Ratulangi University for Students in Dep. of Mathematics and Information Sciences

    Sam Ratulangi University  (Sam Ratulangi University, Manado, Indonesia) 

    2019.09
     
     

  • 4th Pacific Workshop on Discrete Mathematics

    2012.11
     
     

  • 3rd Pacific Workshop on Discrete Mathematics

    2010.12
     
     

  • The 20th Workshop on Topological Graph Theory in Yokohama

    2008.11
     
     

  • 2nd Pacific Workshop on Discrete Mathematics

    2005.12
     
     

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