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Projective Algebraic Geometry in Positive Characteristic

Research Project

Project/Area Number 25400053
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Algebra
Research InstitutionWaseda University

Principal Investigator

KAJI Hajime  早稲田大学, 理工学術院, 教授 (70194727)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords代数幾何学 / 射影双対 / ガウス写像 / 正標数 / 代数幾何 / 射影多様体 / 双対多様体 / ヴェロネーゼ多様体 / ブールの公式 / 次数 / グラスマン束 / チャーン指標
Outline of Final Research Achievements

I obtained a degree formula for Grassmann bundles associated to vector bundles on non-singular projective varieties, as a joint work with Tomohide TERASOMA. I wrote a joint paper with TERASOMA for the resuls, and published it in a scientific journal. I also studied the higher Gauss maps for projective varieties, and obtained a degree formula for the images of higher Gauss maps of Veronese varieties, which yields a generalization of the classical formula by Boole. I wrote a paper for the result of a continued work on the linear degeneration of tangentially degenerate curves, and published it in a scientific journal.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (10 results)

All 2016 2015 2014 2013

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Acknowledgement Compliant: 2 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 1 results,  Invited: 8 results)

  • [Journal Article] Degree formula for Grassmann bundles2015

    • Author(s)
      Hajime Kaji, Tomohide Terasoma
    • Journal Title

      Journal of Pure and Applied Algebra

      Volume: 219 Issue: 12 Pages: 5426-5428

    • DOI

      10.1016/j.jpaa.2015.05.024

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] On the tangentially degenerate curves, II2014

    • Author(s)
      KAJI, Hajime
    • Journal Title

      Bulletin of the Brazilian Mathematical Society, New Series

      Volume: 45 Issue: 4 Pages: 745-752

    • DOI

      10.1007/s00574-014-0072-8

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] A tangential trisecant lemma2016

    • Author(s)
      Hajime KAJI
    • Organizer
      研究集会「第23回沼津研究集会」
    • Place of Presentation
      沼津工業高等専門学校
    • Year and Date
      2016-03-08
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] A tangential trisecant lemma2016

    • Author(s)
      Hajime KAJI
    • Organizer
      研究集会「Younger Generation in Algebraic Geometry and Complex Geometry IV」
    • Place of Presentation
      国立台湾大学 (台湾, 台北)
    • Year and Date
      2016-01-12
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Higher Gauss maps of Veronese varieties-a generalization of Boole's formula-2015

    • Author(s)
      楫 元
    • Organizer
      研究集会「野田代数幾何学シンポジウム」
    • Place of Presentation
      東京理科大学理工学部
    • Year and Date
      2015-03-17
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Higher Gauss maps of Veronese varieties-a generalization of Boole's formula-2015

    • Author(s)
      楫 元
    • Organizer
      Mini-conference on Algebraic Geometry
    • Place of Presentation
      國立臺灣大學 (台北、台湾)
    • Year and Date
      2015-03-06
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] グラスマン束の次数公式(続)2014

    • Author(s)
      楫 元
    • Organizer
      研究集会「代数多様体とその周辺」
    • Place of Presentation
      琉球大学理学部
    • Year and Date
      2014-09-29
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Degree formula for Grassmann bundles2014

    • Author(s)
      KAJI, Hajime
    • Organizer
      Symposium on Projective, Algebraic Varieties and Moduli 2014
    • Place of Presentation
      ソウル国立大学
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] グラスマン束の次数公式2014

    • Author(s)
      楫 元
    • Organizer
      研究集会「第21回沼津研究集会」
    • Place of Presentation
      沼津工業高等専門学校
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] グラスマン束の次数公式2013

    • Author(s)
      楫 元
    • Organizer
      研究集会「Fano多様体の最近の進展」
    • Place of Presentation
      京都大学数理解析研究所
    • Related Report
      2013 Research-status Report
    • Invited

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Published: 2014-07-25   Modified: 2019-07-29  

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