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Study on the secondary obstruction classes of singularities

Research Project

Project/Area Number 21540101
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

SAKUMA Kazuhiro  近畿大学, 理工学部, 教授 (80270362)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords多様体 / 微分可能写像 / 特異点 / 可微分写像 / 折り目写像 / Thom多項式 / ホモトピー原理 / 可微分多様体 / コホモロジー類 / 二次障害類 / ポストニコフ分解 / 写像の特異点 / 折り目特異点 / トム多項式 / 障害類 / 安定スパン
Research Abstract

The secondarycohomology class of singularity for a generic smooth map between differentiable manifolds can be defined as an obstruction class other than the Thom polynomials of singularities. For a generic smooth map between 4-manifolds we have proved that the 4-thStiefel-Whitney class of the source 4-manifold would be the secondary obstructionclass for eliminating cusp singularities of the smooth map.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (13 results)

All 2012 2011 2010 2009

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (4 results) Book (7 results)

  • [Journal Article] Obstructions to the existence of fold maps2010

    • Author(s)
      R. Sadykov, O. Saekiand K. Sakuma
    • Journal Title

      J. London Math. Soc.

      Volume: vol.81 Pages: 338-351

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Obstructions to the existence of fold maps2010

    • Author(s)
      Saeki, Sadykov, Sakuma
    • Journal Title

      J.London Mathematical Society

      Volume: 81 Pages: 338-354

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Thom多項式以外の障害2011

    • Author(s)
      佐久間一浩
    • Organizer
      日本数学会年会
    • Place of Presentation
      早稲田大学理工学部
    • Year and Date
      2011-03-25
    • Related Report
      2011 Final Research Report
  • [Presentation] 折り目写像のコボルディズム2011

    • Author(s)
      佐久間一浩
    • Organizer
      日本数学会
    • Place of Presentation
      早稲田大学
    • Year and Date
      2011-03-21
    • Related Report
      2010 Annual Research Report
  • [Presentation] Topology of fold maps2010

    • Author(s)
      佐久間一浩
    • Organizer
      広島大学トポロジーセミナー
    • Place of Presentation
      日本大学文理学部
    • Year and Date
      2010-10-22
    • Related Report
      2011 Final Research Report
  • [Presentation] 折り目写像のトポロジーについて2010

    • Author(s)
      佐久間一浩
    • Organizer
      写像の特異点論研究集会
    • Place of Presentation
      日本大学文理学部
    • Year and Date
      2010-07-16
    • Related Report
      2011 Final Research Report
  • [Book] 数8の神秘-アーフ不変量に秘められた8の神秘、「数学セミナー」2012年3月号2012

    • Author(s)
      佐久間一浩
    • Publisher
      日本評論社
    • Related Report
      2011 Final Research Report
  • [Book] 数8の神秘-アーフ不変量に秘められた8の神秘、「数学セミナー」2012年2月号2012

    • Author(s)
      佐久間一浩
    • Publisher
      日本評論社
    • Related Report
      2011 Final Research Report
  • [Book] 数8の神秘-アーフ不変量に秘められた8の神秘、「数学セミナー」2012年1月号2012

    • Author(s)
      佐久間一浩
    • Publisher
      日本評論社
    • Related Report
      2011 Final Research Report
  • [Book] 数8の神秘-アーフ不変量に秘められた8の神秘、「数学セミナー」2011年1月号2011

    • Author(s)
      佐久間一浩
    • Publisher
      日本評論社
    • Related Report
      2011 Final Research Report
  • [Book] 数8の神秘-アーフ不変量に秘められた8の神秘、「数学セミナー」2011年11月号2011

    • Author(s)
      佐久間一浩
    • Publisher
      日本評論社
    • Related Report
      2011 Final Research Report
  • [Book] 微分積分学28講2009

    • Author(s)
      青木貴史、大野泰生、尾崎学、佐久間一浩、中村弥生
    • Total Pages
      144
    • Publisher
      培風館
    • Related Report
      2009 Annual Research Report
  • [Book] 線形代数学28講2009

    • Author(s)
      青木貴史、大野泰生、尾崎学、佐久間一浩、中村弥生
    • Total Pages
      133
    • Publisher
      培風館
    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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