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2011 Fiscal Year Final Research Report

Algebraic analysis of algebraic local cohomology and computational complex analysis of non-isolated singularities

Research Project

  • PDF
Project/Area Number 21540167
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Basic analysis
Research InstitutionUniversity of Tsukuba

Principal Investigator

TAJIMA Shinichi  筑波大学, 数理物質系, 教授 (70155076)

Co-Investigator(Kenkyū-buntansha) NAKAMURA Yayoi  近畿大学, 理工学部, 准教授 (60388494)
OHARA Katsuyoshi  金沢大学, 数物科学系, 准教授 (00313635)
MATSUI Yutaka  近畿大学, 理工学部, 講師 (10510026)
Project Period (FY) 2009 – 2011
Keywords代数解析
Research Abstract

Algebraic local cohomology classes attached to hypersurface isolated singularities are considered in the context of algebraic analysis. A new algorithm of computing parametric algebraic local cohomology classes is derived. A new framework to study logarithmic vector fields and associated holonomic D-modules is constructed. An efficient algorithm to compute spectral decomposition of square matrices is derived by analyzing resolvent.

  • Research Products

    (23 results)

All 2012 2011 2010 2009

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (19 results)

  • [Journal Article] Algebraiclocal cohomology classes attached tounimodal singularities2012

    • Author(s)
      S. Tajima and Y. Nakamura
    • Journal Title

      Publication ofResearch Institute of MathematicalSciences

      Volume: 48 Pages: 21-43

    • Peer Reviewed
  • [Journal Article] Standard bases and algebraic localcohomology for zero-dimensional ideals2009

    • Author(s)
      S. Tajima, Y. Nakamura and K. Nabeshima
    • Journal Title

      Advanced Studies in Pure Mathematics

      Volume: 56 Pages: 341-361

    • Peer Reviewed
  • [Journal Article] Annihilatingideals for an algebraic local cohomologyclass2009

    • Author(s)
      S. Tajima and Y. Nakamura
    • Journal Title

      Journal of Symbolic Computations

      Volume: 44 Pages: 435-448

    • Peer Reviewed
  • [Journal Article] On holonomicD-modules attached to Reiffen'shypersurface singularities2009

    • Author(s)
      S. Tajima and Y. Nakamura
    • Journal Title

      Journal of Mathematical Sciences

      Volume: 158 Pages: 288-296

    • Peer Reviewed
  • [Presentation] Risa/Asir行列スペクトル分解パッケージの開発2012

    • Author(s)
      小原功任,田島慎一
    • Organizer
      日本数式処理学会理論分科会 & システム分科会合同研究会
    • Place of Presentation
      仙台青葉カルチャーセンター(宮城)
    • Year and Date
      2012-01-22
  • [Presentation] 零次元代数的局所コホモロジー類に対する偏微分方程式系のスタンダード基底計算2011

    • Author(s)
      田島慎一
    • Organizer
      Computer Algebra. The Algorithms, Implementations and the Next Generation
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2011-12-08
  • [Presentation] 拡張行列ホーナー法と行列スペクトル分解の並列計算2011

    • Author(s)
      小原功任, 田島慎一
    • Organizer
      Computer Algebra-The Algorithms, Implementations and the Next Generation
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2011-12-08
  • [Presentation] Torsion微分形式に関するZariskiの結果と局所コホモロジー2011

    • Author(s)
      田島慎一
    • Organizer
      対数的ベクトル場に関するHauser-Mullerの結果とホロノミーD-加群, 多変数函数論冬セミナー2011
    • Place of Presentation
      広島大学
    • Year and Date
      2011-12-07
  • [Presentation] parametric local cohomologyand Tjurina numbers2011

    • Author(s)
      S. Tajima and Y. Nakamura, Mu-constantdeformations
    • Organizer
      The 4th Japanese-Australian Workshop on Real and Complex Singularities
    • Place of Presentation
      兵庫教育大学
    • Year and Date
      2011-11-25
  • [Presentation] 対数的ベクトル場とホロノミーD-加群I, II2011

    • Author(s)
      田島慎一
    • Organizer
      日本数学会函数論分科会
    • Place of Presentation
      信州大学(長野)
    • Year and Date
      2011-10-01
  • [Presentation] 非孤立特異点のversalI-unfoldingと局所コホモロジー2011

    • Author(s)
      田島慎一
    • Organizer
      日本数学会函数論分科会
    • Place of Presentation
      信州大学(長野)
    • Year and Date
      2011-10-01
  • [Presentation] 最小消去多項式を用いた行列スペクトル分解の並列算法2011

    • Author(s)
      小原功任, 田島慎一
    • Organizer
      日本数学会函数論分科会
    • Place of Presentation
      信州大学(長野)
    • Year and Date
      2011-09-30
  • [Presentation] Semi-quasihomogeneous isolatedsingularityに付随する代数的局所コホモロジー計算アルゴリズムについて2011

    • Author(s)
      鍋島克輔, 田島慎一
    • Organizer
      日本数式処理学会大会
    • Place of Presentation
      神戸大学(兵庫)
    • Year and Date
      2011-09-10
  • [Presentation] Logarithmic holomorphic vector fields and holonomic D-modules2011

    • Author(s)
      S. Tajima
    • Organizer
      The 6th Franco-Japanese Symposium on Singularities
    • Place of Presentation
      九州大学(福岡)
    • Year and Date
      2011-09-09
  • [Presentation] On thecomputation for algebraic local cohomologies associated with semiquasihomogeneous singularities2011

    • Author(s)
      K. Nabeshima and S. Tajima
    • Organizer
      The 6th Franco-Japanese Symposium on Singularities
    • Place of Presentation
      九州大学(福岡)
    • Year and Date
      2011-09-07
  • [Presentation] 行列ホーナー法の拡張と功率化2011

    • Author(s)
      田島慎一, 小原功任, 照井章
    • Organizer
      数式処理の新たな発展
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2011-07-07
  • [Presentation] Holomorphicベクトル場に対するCamacho-Sad-Suwa指数の計算法2011

    • Author(s)
      田島慎一
    • Organizer
      日本数学会函数論分科会
    • Place of Presentation
      早稲田大学
    • Year and Date
      2011-03-22
  • [Presentation] 平面曲線のtorsion微分形式とD-加群2011

    • Author(s)
      田島慎一
    • Organizer
      超幾何方程式系研究会
    • Place of Presentation
      神戸大学
    • Year and Date
      2011-01-07
  • [Presentation] 最小消去多項式を用いた行列スペクトル分解計算の並列化2010

    • Author(s)
      小原功任, 田島慎一
    • Organizer
      Computer Algebra
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2010-12-01
  • [Presentation] 代数的局所コホモロジーを利用したスタンダード基底・グレブナ基底計算2010

    • Author(s)
      鍋島克輔, 中村弥生, 田島慎一
    • Organizer
      実閉体上の幾何と特異点論への応用
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2010-02-02
  • [Presentation] Algebraic analysis of resolvents and its applications to spectral decomposition algorithms2009

    • Author(s)
      S. Tajima
    • Organizer
      Complex Analysis and ites Applications (Joint Sino-Russian Symposium)
    • Place of Presentation
      Belgorod Univ. (Russia)
    • Year and Date
      2009-10-28
  • [Presentation] mu-constant deformations, algebraic local cohomology classes andTjurina stratifications2009

    • Author(s)
      S. Tajima
    • Organizer
      Complex Analysisand ites Applications (Joint Sino-RussianSymposium)
    • Place of Presentation
      Moscow Independent Univ. (Russia)
    • Year and Date
      2009-10-22
  • [Presentation] Algebraiclocal cohomologies and b-functionsattached to semiquasihomogeneous isolated singularities2009

    • Author(s)
      Y. Nakamura and S. Tajima
    • Organizer
      Fifth Franco-Japanese Symposium on Singularities
    • Place of Presentation
      Strasbourg (France)
    • Year and Date
      2009-08-25

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Published: 2013-07-31  

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