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2011 Fiscal Year Final Research Report

Conformal geometry of curves and surfaces and geometric knot theory

Research Project

  • PDF
Project/Area Number 21540089
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Geometry
Research InstitutionTokyo Metropolitan University

Principal Investigator

IMAI Jun  首都大学東京, 大学院・理工学研究科・数理情報科学専攻, 准教授 (70221132)

Co-Investigator(Kenkyū-buntansha) KAMISHIMA Yoshinobu  首都大学東京, 大学院・理工学研究科, 教授 (10125304)
GUEST Martin  首都大学東京, 大学院・理工学研究科, 教授 (10295470)
SOMA Teruhiko  首都大学東京, 大学院・理工学研究科, 教授 (50154688)
AKAHO Manabu  首都大学東京, 大学院・理工学研究科, 助教 (30332935)
Research Collaborator LANGEVIN Remi  ブルゴーニュ大学, ブルゴーニュ数学研究所, 教授
SOLANES Gil  バルセロナ大学, 講師
Project Period (FY) 2009 – 2011
Keywords微分トポロジー / 結び目のエネルギー
Research Abstract

A one-parameter family of renormalized potentials of a compact domain of an Euclidean space is introduced. A couple of sufficient conditions for the uniqueness of a point that gives the maximum(or minimum) value of the potential are given. The renormalization of the average of the squares of the linking numbers of a given knot and random circles, which can be considered as generalization of the renormalization of the integration of a potential on the domain, is studied. It turns out to be invariant under Mobius transformations.

  • Research Products

    (16 results)

All 2012 2011 2010 2009 Other

All Journal Article (7 results) (of which Peer Reviewed: 6 results) Presentation (8 results) Remarks (1 results)

  • [Journal Article] Renormalization of potentials and generalized centers2012

    • Author(s)
      J. O' Hara
    • Journal Title

      Adv. Appl. Math

      Volume: 48 Pages: 365-392

    • Peer Reviewed
  • [Journal Article] Ideal, best packing, and energy minimizing double helices2011

    • Author(s)
      J. O' Hara
    • Journal Title

      Progress of Theoretical Physics Supplement

      Volume: 191 Pages: 215-224

    • Peer Reviewed
  • [Journal Article] Conformal invariance of the writhe of a knot2010

    • Author(s)
      Remi Langevin and Jun O' Hara
    • Journal Title

      J. Knot Theory Ramifications

      Volume: 19 Pages: 1115-1123

    • Peer Reviewed
  • [Journal Article] Conformal arc-length as 1/2 dimensional length of the set of osculating circles2010

    • Author(s)
      Remi Langevin and Jun O' Hara
    • Journal Title

      Comm. Math. Helv

      Volume: 85 Pages: 273-312

    • Peer Reviewed
  • [Journal Article] The configuration space of equilateral and equiangular hexagons

    • Author(s)
      J. O' Hara
    • Journal Title

      Osaka J. Math

    • Peer Reviewed
  • [Journal Article] Isoperimetric characterization of the incenter of a triangle

    • Author(s)
      J. O' Hara
    • Journal Title

      Elemente der Mathematik

    • Peer Reviewed
  • [Journal Article] On the Moebius geometry of Euclidean triangles

    • Author(s)
      Udo Hertrich-Jeromin, Alastair King, and Jun O' Hara
    • Journal Title

      Elemente der Mathematik

  • [Presentation] Mobius invariant energies and average linking with circle、ESF-EMS-CRM-Pi International Conference on Knots and Links : From Form to Function、Centro di Ricerca Matematica(CRM)2011

    • Author(s)
      J. O' Hara
    • Organizer
      Scuola Normale Superiore
    • Place of Presentation
      ピサ(イタリア)
    • Year and Date
      2011-07-04
  • [Presentation] Renormalization of r*-potentials and generalized centers、Differential Geometry and Parametrization of 3D Knots2011

    • Author(s)
      J. O' Hara
    • Organizer
      Centro di Ricerca Matematica(CRM)
    • Place of Presentation
      ピサ(イタリア)
    • Year and Date
      2011-06-28
  • [Presentation] r-ポテンシャルの繰り込みとdual volume,重心の一般化2011

    • Author(s)
      今井淳
    • Organizer
      日本数学会年会
    • Place of Presentation
      早稲田大学
    • Year and Date
      2011-03-20
  • [Presentation] 平面領域のMobius不変なエネルギー,結び目と円の平均二乗絡み数2011

    • Author(s)
      今井淳
    • Organizer
      日本数学会年会
    • Place of Presentation
      早稲田大学
    • Year and Date
      2011-03-20
  • [Presentation] Slopes of double helices and geometric energies2010

    • Author(s)
      J. O' Hara
    • Organizer
      Statistical physics and topology of polymers with ramifications to structure and function of DNA and proteins
    • Place of Presentation
      京都大学基礎物理学研究所
    • Year and Date
      2010-08-03
  • [Presentation] Energy of knots and related topics2010

    • Author(s)
      J. O' Hara
    • Organizer
      第2回KOOK-TAPU合同Seminar,第4回大学院学生ワークショップ
    • Place of Presentation
      慶北国立大学、韓国・大邱
    • Year and Date
      2010-07-28
  • [Presentation] Introduction to Knot Theory(with Javier Arsuaga)2009

    • Author(s)
      J. O' Hara
    • Organizer
      DNA Topology Course 2009, Okinawa Institute of Science and Technology
    • Place of Presentation
      沖縄
    • Year and Date
      2009-11-03
  • [Presentation] Conformally invariant energies of knots and links2009

    • Author(s)
      J. O' Hara
    • Organizer
      Advanced School and Conference on Knot Theory and its Applications to Physics and Biology
    • Place of Presentation
      International Centre for Theoretical Physics, Trieste, Italy
    • Year and Date
      2009-05-26
  • [Remarks]

    • URL

      http://www.comp.tmu.ac.jp/knotNRG/indices/indexj.html

URL: 

Published: 2013-07-31  

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