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Study of topological properties of knots viewed from surfaces

Research Project

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
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥2,180,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥180,000)
Fiscal Year 2008: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2007: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2006: ¥800,000 (Direct Cost: ¥800,000)
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 / ファイバー絡み目 / アレクサンダー多項式 / 幾何学 / ファイバー結び目 / 結び目の符号数 / 結び目多項式 / 組紐
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.

Report

(4 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (22 results)

All 2009 2008 2007 2006 Other

All Journal Article (15 results) (of which Peer Reviewed: 10 results) Presentation (4 results) Remarks (3 results)

  • [Journal Article] Twisted Alexander polynomials of 2-bridge knots associated to metabelian representations2009

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

      arXiv

      Pages: 1-14

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Twisted Alexander polynomials of 2-bridge knots associated to metacyclic representations2009

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

      arXiv

      Pages: 1-34

    • Related Report
      2008 Annual Research Report
  • [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

    • Related Report
      2008 Final Research Report
    • 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

    • NAID

      110006958255

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Seifert surfaces in open books, and a new coding algorithm for links2008

    • Author(s)
      R. Furihata, M. Hirasawa & T. Kobayasi
    • Journal Title

      Bulletin of the London Mathematical Society 40

      Pages: 405-414

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] When does a satellite knot fiber2008

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

      Hiroshima Mathematical Journal 38

      Pages: 411-423

    • NAID

      110006958255

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evaluations of the twisted Alexander polynomials of 2-bridge knots at \pm 12008

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

      arXiv

      Pages: 1-43

    • Related Report
      2008 Annual Research Report
  • [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

    • NAID

      120004846097

    • Related Report
      2008 Final Research Report
    • 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

    • Related Report
      2008 Final Research Report
    • 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

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Obtaining string-minimizing, length-minimizing braid word for 2-bridgelinks2007

    • Author(s)
      M. Hirasawa
    • Journal Title

      Series on Knots and Everything, Intelligence of low dimensional topology 2006 Vol40

      Pages: 43-50

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Genera and fibredness of Montesinos knots2007

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

      Pacific Journal of Mathematics vol 25 (2006) 225

      Pages: 53-83

    • Related Report
      2007 Annual Research Report
    • 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 Mathematics 44

      Pages: 11-70

    • NAID

      120004846097

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the twisted Alexander polynomials of knots2007

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

      Hakone Seminar 23

      Pages: 1-14

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Obtaining string-minimizing, length-minimizing braid words for 2-bridge links

    • Author(s)
      M.Hirasawa
    • Journal Title

      Intelligence of Low Dimensional Topology 2006 (出版予定)

    • Related Report
      2006 Annual Research Report
  • [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
    • Related Report
      2008 Final Research Report
  • [Presentation] The Alexander polynomial and signature of rational knots and links2007

    • Author(s)
      M. Hirasawa
    • Organizer
      International conference on Topology and its Applications
    • Place of Presentation
      京都大学
    • Year and Date
      2007-12-06
    • Related Report
      2007 Annual Research Report
  • [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
    • Related Report
      2008 Final Research Report
  • [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
    • Related Report
      2008 Final Research Report
  • [Remarks]

    • URL

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

    • Related Report
      2008 Final Research Report
  • [Remarks]

    • URL

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

    • Related Report
      2008 Annual Research Report
  • [Remarks]

    • URL

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

    • Related Report
      2007 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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