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Study on Glois embedding of surface of non-general type

Research Project

Project/Area Number 24540036
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

Yoshihara Hisao  新潟大学, 自然科学系, フェロー (60114807)

Co-Investigator(Kenkyū-buntansha) TOKUNAGA Hiroo  首都大学東京, 理工学研究科, 教授 (30211395)
Co-Investigator(Renkei-kenkyūsha) KONDO Shigeyuki  名古屋大学, 多元数理科学研究科, 教授 (50186847)
KONNO Kazuhiro  大阪大学, 理学研究科, 教授 (10186869)
KOJIMA Hideo  新潟大学, 自然科学系, 教授 (90332824)
Project Period (FY) 2012-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsガロワ埋め込み / ガロワ群 / ガロワ直線 / ガロワ閉包多様体 / 代数幾何学 / ガロワ被覆 / Galois line / Galois embedding / Galois group / finite covering / ガロワ点 / 分岐被覆 / 射影多様体
Outline of Final Research Achievements

We have studied Galois points for plane curves and some hypersurfaces, after that we have generalized the concept of it and defined Galois embedding of algebraic varieties. Here we study on the Galois embeddings of conclete algebraic varieties. For elliptic curve we embedd it by complete linear system and study the arrangement of Galois lines. For algebraic surface of non-general type we consider if there exists the Galois embedding, in paticular bi-elliptic surface has no Galois embedding. In case some algebraic variety has no Galois embedding, we consider the Galois closure variety, especially we take such variety as smooth cubic.

Report

(5 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (17 results)

All 2015 2014 2013 2012 Other

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results) Presentation (10 results) (of which Int'l Joint Research: 1 results,  Invited: 10 results) Remarks (4 results)

  • [Journal Article] Integral section of elliptic surfaces and degenerated (2,3) torus decompositions of a 3-cuspidal quartic2015

    • Author(s)
      H. Tokunaga and K. Tumenbayar
    • Journal Title

      SUT J. of Math.

      Volume: 51

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Galois group at each point for some self-dual curves2013

    • Author(s)
      Hiroyuki Hayashi and Hisao Yoshihara
    • Journal Title

      Geometry

      Volume: 1

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Sextic variety as Galois closure variety of smooth cubic2013

    • Author(s)
      Hisao Yoshihara
    • Journal Title

      Affine Algebraic Geometry-Proceedings

      Volume: 1

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Integral sections of rational elliptic surfaces and contact conics to 3-codal quartics2015

    • Author(s)
      H. Tokunaga
    • Organizer
      Various Aspects of Algebraic Geometry
    • Place of Presentation
      国際基督教大学
    • Year and Date
      2015-12-13
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 代数曲面のガロワ埋め込みの可能性2015

    • Author(s)
      吉原久夫
    • Organizer
      第二回代数幾何学研究集会ー宇部ー
    • Place of Presentation
      宇部工業高等専門学校
    • Year and Date
      2015-01-24 – 2015-01-25
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] 代数曲面のガロワ埋め込み2015

    • Author(s)
      吉原久夫
    • Organizer
      代数幾何シンポジウム in 岐阜
    • Place of Presentation
      ソフトピアジャパンセンタービル
    • Year and Date
      2015-01-10 – 2015-01-11
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Galois embedding of P^n2014

    • Author(s)
      吉原久夫
    • Organizer
      射影多様体の幾何とその周辺
    • Place of Presentation
      高知大学理学部
    • Year and Date
      2014-11-01 – 2014-11-03
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Abelian embedding of P^n2014

    • Author(s)
      吉原久夫
    • Organizer
      Work shop on Galois points and related topics
    • Place of Presentation
      滋賀大学大津サテライトプラザ
    • Year and Date
      2014-09-13 – 2014-09-15
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] J=1728 の楕円曲線の4 次埋め込みのガロワ直線の配置2013

    • Author(s)
      吉原久夫
    • Organizer
      Work shop on Galois points and related topics
    • Place of Presentation
      山形大学理学部, 山形市
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Non-existence of Galois covering of smooth rational surface by bi-elliptic surface2013

    • Author(s)
      吉原久夫
    • Organizer
      代数幾何学小研究集会
    • Place of Presentation
      新潟大学駅南キャンパスときめいと, 新潟市
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Arrangement of Galois lines for space elliptic curves2013

    • Author(s)
      Hisao Yoshihara
    • Organizer
      Symposium on Algebraic Curves
    • Place of Presentation
      首都大学東京, 八王子市
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Sextic variety as Galois closure varity of some cubic hypersurface2012

    • Author(s)
      吉原久夫
    • Organizer
      特異点と多様体の幾何学
    • Place of Presentation
      山形大学理学部
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] Galois group at each point for some self-dual curves2012

    • Author(s)
      吉原久夫
    • Organizer
      Galois point and related topics
    • Place of Presentation
      山形大学理学部
    • Related Report
      2012 Research-status Report
    • Invited
  • [Remarks] Galois point and related topics

    • URL

      http://hyoshihara.web.fc2.com/

    • Related Report
      2015 Annual Research Report 2014 Research-status Report
  • [Remarks] Galois points and related topics

    • URL

      http://hyoshihara.web.fc2.com/

    • Related Report
      2013 Research-status Report
  • [Remarks] OPEN QUESTIONS

    • URL

      http://mathweb.sc.niigata-u.ac.jp/~yoshihara/openquestion.html

    • Related Report
      2013 Research-status Report
  • [Remarks] Open Questions

    • URL

      http://mathweb.sc.niigata-u.ac.jp/~yosihara/openquestion.html

    • Related Report
      2012 Research-status Report

URL: 

Published: 2013-05-31   Modified: 2019-07-29  

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