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non-existence of minimal surfaces connecting distant curves

Research Project

Project/Area Number 23654026
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Geometry
Research InstitutionOsaka University

Principal Investigator

KOISO Norihito  大阪大学, 理学(系)研究科(研究院), 教授 (70116028)

Project Period (FY) 2011-04-28 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywords極小部分多様体 / 平均曲率一定曲面 / 極小曲面
Outline of Final Research Achievements

Let (M,g) be a Riemannian manifold (H^3, e^{2f}g_0) (|df| < a < 1/2, f < b), conformal to the 3-dimensional Poincare sphere. Then (M, g) has separation property for surfaces such that absolute value of mean curvature < e^{-b}(1-2a). Namely, for any placement of finite point set {P_i} on M, there exists a positive number r with following property: For each i, let B_i be a geodesic sphere of radius < r with center P_i and G_i be closed curve in B_i, S be a compact surface such that its boundary is the union ∪_iG_i and its absolute value of mean curvature is less than e^{-b}(1-2a), then S is contained in the union ∪_iB_i.

Report

(5 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (7 results)

All 2015 2014 2013

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (6 results) (of which Invited: 4 results)

  • [Journal Article] On motion of an elastic wire in a Riemannian manifold and singular perturbation2015

    • Author(s)
      N. Koiso
    • Journal Title

      Osaka J. Math.

      Volume: 52 Pages: 453-475

    • NAID

      120005830456

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] B. Y.- Chen's conjecture on hypersurfaces of Eucledian spaces2014

    • Author(s)
      N. Koiso, H. Urakawa
    • Organizer
      部分多様体論・湯沢2014
    • Place of Presentation
      湯沢グランドホテル (新潟県,湯沢町)
    • Year and Date
      2014-11-20
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] 2 重調和部分多様体 - B. -Y. Chen の予想について2014

    • Author(s)
      小磯憲史,浦川肇
    • Organizer
      日本数学会 2014 年度秋期総合分科会
    • Place of Presentation
      広島大学 (広島県,東広島市)
    • Year and Date
      2014-09-25
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] 2 重調和部分多様体 - B.-Y. Chen 予想について2014

    • Author(s)
      小磯憲史,浦川肇
    • Organizer
      第 61 回幾何学シンポジウム
    • Place of Presentation
      名城大学 (愛知県,名古屋市)
    • Year and Date
      2014-08-25
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Bi-harmonic hypersurfaces in Euclidean spaces2014

    • Author(s)
      N. Koiso, H. Urakawa
    • Organizer
      The 5th International Workshop on Differential Geometry and Analysis
    • Place of Presentation
      虹ノ松原ホテル (佐賀県,唐津市)
    • Year and Date
      2014-06-01
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] 離れた閉曲線は平均曲率が小さい曲面では繋げない2013

    • Author(s)
      小磯憲史
    • Organizer
      福岡大学幾何セミナー
    • Place of Presentation
      福岡大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 遠い閉曲線を繋ぐ平均曲率が小さい曲面の非存在2013

    • Author(s)
      小磯憲史
    • Organizer
      福岡大学微分幾何研究会
    • Place of Presentation
      福岡大学
    • Related Report
      2013 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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