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2008 Fiscal Year Final Research Report

Study of topological properties of knots viewed from surfaces

Research Project

  • PDF
Project/Area Number 18740035
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Geometry
Research InstitutionNagoya Institute of Technology

Principal Investigator

HIRASAWA Mikami  Nagoya Institute of Technology, 大学院・工学研究科, 准教授 (00337908)

Project Period (FY) 2006 – 2008
Keywords結び目 / 絡み目 / 三次元多様体 / 不変量 / ザイフェルト曲面 / ファイバー曲面
Research Abstract

三次元空間内の絡まった輪の事を結び目といい,その集まりを絡み目と呼ぶ.それらは紐を切らずに互いに変形し合えるものは同値とみなす.本研究では結び目の持つ,位相的な性覧を研究対象とし,性質を引き出すために結び目や絡み目を境界としてもつ曲面を利用した.その結果,絡み目補空間の構造(ファイバー構造),組紐としての良い配置,曲面込みでの良い配置,符号数やアレクサンダー多項式などの不変量などに関する成果をあげた.

  • Research Products

    (9 results)

All 2008 2007 2006 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (3 results) Remarks (1 results)

  • [Journal Article] Seifert surfaces in open books, and a new coding algorithm for links2008

    • Author(s)
      R.Furihata, M.Hirasawa and T. Kobayashi
    • Journal Title

      Bulletin of the London Math. Society Vol. 40

      Pages: 405-414

    • Peer Reviewed
  • [Journal Article] When does a satellite knot fiber ?2008

    • Author(s)
      M. Hirasawa, K. Murasugi and D. Silver
    • Journal Title

      Hiroshima Math. Journal Vol. 38

      Pages: 411-423

    • Peer Reviewed
  • [Journal Article] Fibred double torus knots which are band-sums of torus knots2007

    • Author(s)
      M. Hirasawa and K. Murasugi
    • Journal Title

      Osaka Journal of Math Vol. 44

      Pages: 11-70

    • Peer Reviewed
  • [Journal Article] Genera and firedness of Montesinos knots2007

    • Author(s)
      M. Hirasawa and K. Murasugi
    • Journal Title

      Pacific Journal of Math Vol. 225

      Pages: 53-83

    • Peer Reviewed
  • [Journal Article] Obtaining string-minimizing, length-minimizing braid word for 2-bridge links2007

    • Author(s)
      M. Hirasawa
    • Journal Title

      Series on Knots and Everything Vol.40

      Pages: 43-50

    • Peer Reviewed
  • [Presentation] The Alexander polynomial and signature of rational knots2007

    • Author(s)
      M. Hirasawa
    • Organizer
      lnternational conference on Topology and its Applications, A Joint conference with the 4^<th> Japan-Mexico Topology conference
    • Place of Presentation
      京都大学
    • Year and Date
      2007-12-06
  • [Presentation] When does a satellite knot fiber ?2007

    • Author(s)
      M. Hirasawa
    • Organizer
      The 3^<rd> East Asian School of Knots and Related Topics
    • Place of Presentation
      大阪市立大学
    • Year and Date
      2007-02-08
  • [Presentation] Obtaining string-minimizing, length-minimizing braid word for 2-bridge links2006

    • Author(s)
      M. Hirasawa
    • Organizer
      Intelligence of Low Dimensional Toplogy
    • Place of Presentation
      広島大学
    • Year and Date
      2006-07-25
  • [Remarks]

    • URL

      http://venus.kyy.nitech.ac.jp/~hirasawa/

URL: 

Published: 2010-06-10   Modified: 2016-04-21  

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