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Classification theory of projective varieties by Galois point and new developments

Research Project

Project/Area Number 22740001
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Algebra
Research InstitutionYamagata University

Principal Investigator

FUKASAWA Satoru  山形大学, 理学部, 准教授 (20569496)

Project Period (FY) 2010 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Keywords代数幾何 / ガロア点 / 正標数 / 射影代数多様体 / 射影 / ガロア群 / ガウス写像 / 射影代数名様体
Research Abstract

(1) I completely settled the distribution of Galois points for a smooth plane curve in positive characteristic. (2) Generalizing the Klein quartic in characteristic two, I gave a family of curves with at least two Galois points. (3) I showed that Galois points for a certain rational plane curve coincide with rational points over a finite field. (4) As a joint work with Homma and Kim, we showed that the curves in (3) induce good algebraic-geometric codes. (5) As a joint work with Miura, we studied the relationship between Galois points and dual curves (in characteristic zero), and showed that the dual curve of a smooth plane curve does not have a Galois point.

Report

(4 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (25 results)

All 2013 2012 2011 2010 Other

All Journal Article (5 results) (of which Peer Reviewed: 2 results) Presentation (17 results) (of which Invited: 1 results) Remarks (3 results)

  • [Journal Article] Galois points for a non-reflexive plane curve of low degree2013

    • Author(s)
      Satoru Fukasawa
    • Journal Title

      Finite Fields and Their Applications

      Volume: 23 Pages: 69-79

    • DOI

      10.1016/j.ffa.2013.04.003

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
  • [Journal Article] Rational curves with many rational points over a finite field2012

    • Author(s)
      Satoru Fukasawa, Masaaki Homma and Seon Jeong Kim
    • Journal Title

      Contemporary Mathematics

      Volume: 574 Pages: 37-48

    • DOI

      10.1090/conm/574/11420

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Classification of plane curves with infinitely many Galois points2011

    • Author(s)
      Satoru Fukasawa
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: 63 Issue: 1 Pages: 195-209

    • DOI

      10.2969/jmsj/06310195

    • NAID

      10027871307

    • ISSN
      0025-5645, 1881-1167, 1881-2333
    • Related Report
      2012 Final Research Report 2010 Annual Research Report
  • [Journal Article] On the number of Galois points for a plane curve in positive characteristic2010

    • Author(s)
      Satoru Fukasawa
    • Journal Title

      III, Geometriae Dedicata

      Volume: 146 Issue: 1 Pages: 9-20

    • DOI

      10.1007/s10711-009-9422-x

    • Related Report
      2012 Final Research Report
  • [Journal Article] On the number of Galois points for a plane curve in positive characteristic, III2010

    • Author(s)
      Satoru Fukasawa
    • Journal Title

      Geometriae Dedicata

      Volume: 146 Pages: 9-20

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Galois points for a plane curve in arbitrary characteristic2013

    • Author(s)
      Satoru Fukasawa
    • Organizer
      代数・解析・幾何学セミナー
    • Place of Presentation
      鹿児島大学理学部
    • Year and Date
      2013-02-20
    • Related Report
      2012 Annual Research Report 2012 Final Research Report
  • [Presentation] Ballico-Hefez 曲線上のガロア点, 有理点, 符号2012

    • Author(s)
      深澤知
    • Organizer
      Workshop on Galois point and related topics
    • Place of Presentation
      山形大学理学部
    • Year and Date
      2012-09-16
    • Related Report
      2012 Final Research Report
  • [Presentation] 代数多様体のガロア点の研究とその展開2012

    • Author(s)
      深澤知
    • Organizer
      長岡高専解析・確率セミナー
    • Place of Presentation
      長岡工業高等専門学校
    • Year and Date
      2012-07-12
    • Related Report
      2012 Annual Research Report 2012 Final Research Report
  • [Presentation] 非特異平面曲線のガロア点の個数の正標数における完全決定2012

    • Author(s)
      深澤知
    • Organizer
      日本数学会年会
    • Place of Presentation
      東京理科大学理学部
    • Year and Date
      2012-03-28
    • Related Report
      2012 Final Research Report 2011 Annual Research Report
  • [Presentation] Galois points for a smooth plane curve in characteristic p2011

    • Author(s)
      深澤知
    • Organizer
      射影多様体の幾何とその周辺2011
    • Place of Presentation
      高知大学理学部
    • Year and Date
      2011-11-04
    • Related Report
      2012 Final Research Report
  • [Presentation] Galois points for a smooth plane curve in characteristic p2011

    • Author(s)
      深澤知
    • Organizer
      射影多様体の幾何とその周辺2011
    • Place of Presentation
      高知大学理学部(招待講演)
    • Year and Date
      2011-11-04
    • Related Report
      2011 Annual Research Report
  • [Presentation] Galois points for a smooth plane curve in characteristic p2011

    • Author(s)
      深澤知
    • Organizer
      代数幾何学シンポジウム-佐渡-
    • Place of Presentation
      新潟県佐渡島総合開発センター
    • Year and Date
      2011-06-04
    • Related Report
      2012 Final Research Report
  • [Presentation] Galois points for a smooth plane curve in characteristic p2011

    • Author(s)
      深澤知
    • Organizer
      代数幾何学シンポジウム-佐渡-
    • Place of Presentation
      新潟県、佐渡島総合開発センター(招待講演)
    • Year and Date
      2011-06-04
    • Related Report
      2011 Annual Research Report
  • [Presentation] Projective geometry of the Gauss map in positive characteristic2010

    • Author(s)
      深澤知
    • Organizer
      都の西北代数幾何学シンポジウム
    • Place of Presentation
      早稲田大学理工学術院
    • Year and Date
      2010-11-13
    • Related Report
      2012 Final Research Report
  • [Presentation] Projective geometry of the Gauss map in positive characteristic2010

    • Author(s)
      深澤知
    • Organizer
      都の西北 代数幾何学シンポジウム
    • Place of Presentation
      早稲田大学理工学術院(招待講演)
    • Year and Date
      2010-11-13
    • Related Report
      2010 Annual Research Report
  • [Presentation] Galois points for a normal hypersurface2010

    • Author(s)
      Satoru Fukasawa
    • Organizer
      研究集会「特異点と多様体の幾何学」
    • Place of Presentation
      山形大学理学部
    • Year and Date
      2010-09-15
    • Related Report
      2012 Final Research Report
  • [Presentation] Galois points for a normal hypersurface2010

    • Author(s)
      S.Fukasawa
    • Organizer
      研究集会「特異点と多様体の幾何学」
    • Place of Presentation
      山形大学理学部(招待講演)
    • Year and Date
      2010-09-15
    • Related Report
      2010 Annual Research Report
  • [Presentation] 正標数におけるガウス写像の射影幾何2010

    • Author(s)
      深澤知
    • Organizer
      第6回アフィン代数幾何学研究集会
    • Place of Presentation
      関西学院大学梅田キャンパス
    • Year and Date
      2010-09-02
    • Related Report
      2012 Final Research Report
  • [Presentation] 正標数におけるガウス写像の射影幾何2010

    • Author(s)
      深澤知
    • Organizer
      第6回アフィン代数幾何学研究集会
    • Place of Presentation
      関西学院大学梅田キャンパス(招待講演)
    • Year and Date
      2010-09-02
    • Related Report
      2010 Annual Research Report
  • [Presentation] Galoispointsforanormal hypersurface I2010

    • Author(s)
      深澤知
    • Organizer
      Workshop on Galois point and related topics
    • Place of Presentation
      神奈川大学富士見高原研修所
    • Year and Date
      2010-06-07
    • Related Report
      2012 Final Research Report
  • [Presentation] Galois points for a normal hypersurface I2010

    • Author(s)
      深澤知
    • Organizer
      Workshop on Galois point and related topics
    • Place of Presentation
      神奈川大学富士見高原研修所(招待講演)
    • Year and Date
      2010-06-07
    • Related Report
      2010 Annual Research Report
  • [Presentation] Ballico-Hefez曲線上のガロア点, 有理点, 符号

    • Author(s)
      深澤知
    • Organizer
      Workshop on Galois point and related topics
    • Place of Presentation
      山形大学理学部
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Remarks] 正標数の視点からの射影代数幾何学の研究

    • Related Report
      2012 Final Research Report
  • [Remarks] 正標数の視点からの射影代数幾何学の研究

    • URL

      http://www-sci.yamagata-u.ac.jp/seeds/matSeedsFiles/fukasawa.pdf

    • Related Report
      2012 Annual Research Report
  • [Remarks]

    • URL

      http://www-sci.yamagata-u.ac.jp/seeds/matSeedsFiles/fukasawa.pdf

    • Related Report
      2011 Annual Research Report

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Published: 2010-08-23   Modified: 2019-07-29  

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