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2009 Fiscal Year Self-evaluation Report

Geometry of curves and surfaces with singularities

Research Project

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Project/Area Number 19204005
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Geometry
Research InstitutionOsaka University

Principal Investigator

UMEHARA Masaaki  Osaka University, 大学院・理学研究科, 教授 (90193945)

Project Period (FY) 2007 – 2010
Keywords微分幾何 / ガウス曲率 / 平均曲率 / 波面 / 特異点
Research Abstract

本研究は,特異点自体に曲率を導入し,微分幾何的な対象として研究することを最終的な目標としている.具体的には以下の3つのテーマについて研究を行う.
(1)特異点を対象とする微分幾何学の構築
(2)定曲率空間における波面の特異点と位相に関する研究,およびその関連分野への応用
(3)Euclid空間および双曲型空間における完備かつ有界な極小曲面の研究.

  • Research Products

    (7 results)

All 2010 2009 2008

All Journal Article (6 results) (of which Peer Reviewed: 5 results) Presentation (1 results)

  • [Journal Article] Flat surfaces with singularities in Euclidean 3-space2009

    • Author(s)
      S. Murata, M. Umehara
    • Journal Title

      journal of Differential Geometry 82

      Pages: 279-316

    • Peer Reviewed
  • [Journal Article] Complete bounded null curves immersed in C3 and PSL (2, C)2009

    • Author(s)
      F. Martin, M. Umehara, K. Yamada
    • Journal Title

      Calculus of Variations and Partial Differential Equations 36

      Pages: 119-139

    • Peer Reviewed
  • [Journal Article] Mathematical Proceedings of the Cambridge Philosophical Society2009

    • Author(s)
      K. Saji, M. Umehara, K. Yamada, Ak singularities of wave fronts
    • Journal Title

      Volume 146

      Pages: 731-746

    • Peer Reviewed
  • [Journal Article] The geometry of fronts2009

    • Author(s)
      K. Saji, M. Umehara, K. Yamada
    • Journal Title

      Ann. of Math 169

      Pages: 491-529

    • Peer Reviewed
  • [Journal Article] Singularities of maximal surfaces2008

    • Author(s)
      S. Fujimori, K. Saji, M. Umehara, K. Yamada
    • Journal Title

      Math. Z 259

      Pages: 827-848

  • [Journal Article] Inflection points and double tangents on anti-convex curves in the real projective plane2008

    • Author(s)
      G. Thorbergsson, M. Umehara
    • Journal Title

      Tohoku Mathematical Journal 60

      Pages: 149-181

    • Peer Reviewed
  • [Presentation] 波面の幾何学-その内的双対性と Gauss-Bonnet の定理への応用-2010

    • Author(s)
      梅原雅顕
    • Organizer
      日本数学会2010年度年会・企画特別講演
    • Place of Presentation
      慶應義塾大学・理工学部 (神奈川県)
    • Year and Date
      2010-03-26

URL: 

Published: 2011-06-18   Modified: 2016-04-21  

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