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Study on singularities and stability of harmonic maps between Riemannian manifolds

Research Project

Project/Area Number 18740088
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Global analysis
Research InstitutionShizuoka University

Principal Investigator

NAKAJIMA Toru  Shizuoka University, 工学部, 准教授 (50362182)

Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,860,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥360,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2007: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2006: ¥1,300,000 (Direct Cost: ¥1,300,000)
Keywords調和写像 / 安定性 / 特異性 / 第一固有値
Research Abstract

コンパクトリーマン多様体間の写像で、ディリクレ汎関数の停留点になっているものを調和写像と呼ぶ。調和写像は測地線の一般化と考えられるが、一般に不連続点を持ち得るものである。しかし値域となる多様体が球面という典型的な場合でさえ、不連続性の解析は十分ではない。本研究では不連続性の解析に関連して、調和写像の安定性について考察を行い、3次元以上の球面間の定数写像でない調和写像に付随するヤコビ作用素の最少固有値が最大になる場合の、調和写像の特徴付けを行った。

Report

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

    (6 results)

All 2009 2007 2006

All Journal Article (3 results) (of which Peer Reviewed: 2 results) Presentation (1 results) Book (2 results)

  • [Journal Article] A remark on instability of harmonic maps between spheres2009

    • Journal Title

      Pacific Journal of Mathematics Vol.240, no.1

      Pages: 363-369

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] A remark on instability of harmonic maps between spheres2009

    • Author(s)
      Toru Nakajima
    • Journal Title

      Pacific Journal of Mathematics 240

      Pages: 363-369

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Singular points of harmonic maps from 4-dimensional domains into 3-spheres.2006

    • Author(s)
      Toru Nakajima
    • Journal Title

      Duke Mathematical Journal 132・no.3

      Pages: 531-543

    • Related Report
      2006 Annual Research Report
  • [Presentation] Singularities of harmonic maps into spheres2007

    • Author(s)
      中島 徹
    • Organizer
      Nonlinear Analysis of Curves and Surfaces
    • Place of Presentation
      埼玉大学ソニックシティカレッジ
    • Year and Date
      2007-12-25
    • Related Report
      2008 Final Research Report 2007 Annual Research Report
  • [Book] これからの非線型偏微分方程式2007

    • Author(s)
      小園 英雄, 他12名
    • Publisher
      日本評論社
    • Related Report
      2008 Final Research Report
  • [Book] これからの非線型偏微分方程式2007

    • Author(s)
      小園英雄, 小川卓克, 三沢正史 編
    • Total Pages
      303
    • Publisher
      日本評論者
    • Related Report
      2007 Annual Research Report

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

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