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Comprehensive research of Galois embedding of algebraic variety

Research Project

Project/Area Number 15K04813
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) 徳永 浩雄  首都大学東京, 理学研究科, 教授 (30211395)
Research Collaborator KOJIMA Hideo  
TAKAHASHI Takeshi  
FUKASAWA Satoru  
HOSHI Akinari  
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsガロワ埋め込み / ガロワ点 / 代数多様体 / ガロワ直線 / ガロワ群 / 被覆 / 楕円曲線 / bi-elliptic surface
Outline of Final Research Achievements

In order to study algebraic variety, I have intorduced the tool combining algebra and geometry, i.e., Galois embedding. Using the tool I have studied the Galois embedding for some algebraic varieties, i.e., bi-elliptic surfaces, projective spaces and elliptic curves.

Academic Significance and Societal Importance of the Research Achievements

代数幾多様体の研究に基本的な一つの新しい視点を与えた。従来の研究より具体的で密接に幾何学と代数学の関係をつなぐことに成果があった。すなわち、射影という古典的手法を用いて多様体の射影空間への被覆が対称性が保たれているような場合に、多様体の上の関数の体が基本的な純超越拡大からどの程度離れているかを計り、超越拡大の分類の一つの手段ともなった。また、多様体の因子による埋め込みなので、多様体自身とその上の因子の研究方法にも役立った。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (32 results)

All 2019 2018 2017 2016 2015 Other

All Journal Article (11 results) (of which Int'l Joint Research: 10 results,  Peer Reviewed: 11 results,  Open Access: 1 results) Presentation (18 results) (of which Int'l Joint Research: 12 results,  Invited: 18 results) Remarks (3 results)

  • [Journal Article] Rational points of elliptic surfaces and the topology of cubic-line, cubic-conic-line arrangements2019

    • Author(s)
      S. Bannai, H. Tokunaga and M. Yamamoto
    • Journal Title

      Hokkaido Math. J.

      Volume: 印刷中

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A note on the topology of arrangements for a smooth plane quartic and its bitangent lines2019

    • Author(s)
      S. Bannai, H. Tokunaga and M. Yamamoto
    • Journal Title

      Hokkaido Math. J.

      Volume: 印刷中

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Galois lines for space elliptic curve with j=12^32018

    • Author(s)
      M. Kanazawa and H. Yoshihara
    • Journal Title

      Beitr. Algebra Geom.

      Volume: 59 Issue: 3 Pages: 431-444

    • DOI

      10.1007/s13366-018-0380-z

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Elliptic surfaces and contact conics for a 3-nodal quartic.2018

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

      Hokkaido Math. J.

      Volume: 47

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Galois lines for space elliptic curve with j = 12^32018

    • Author(s)
      Mitsunori Kanazawa and Hisao Yoshihara
    • Journal Title

      Contribution to Algebra and Geometry

      Volume: 印刷中

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A note on Galois embedding and its application to P^n2017

    • Author(s)
      Hisao Yoshihara
    • Journal Title

      Nihonkai Math. J.

      Volume: 2 Pages: 99-104

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Geometry of bisections of elliptic surfaces and Zarisiki N-plets II2017

    • Author(s)
      Shinzo Bannai and Hiro-o Tokunaga
    • Journal Title

      Topology Appl.

      Volume: 231 Pages: 10-25

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] On the toplogy of arrangements of a cubic and its inflectional tangents2017

    • Author(s)
      Shinzo Bannai, Benoit Guerville-Balle, Taketo Shirane and Hiro-o Tokunaga
    • Journal Title

      Pro. Japa Acad. Ser. A Math. Sci.

      Volume: 93 Pages: 50-53

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Elliptic surfaces and contact conics for a 3-nodal quartic2017

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

      Hokkaido Math. J.

      Volume: 印刷中

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Smooth quotient of bi-elliptic surfaces2016

    • Author(s)
      H. Yoshihara
    • Journal Title

      Beitr. Algebra Geom.

      Volume: 57 Issue: 4 Pages: 765-769

    • DOI

      10.1007/s13366-016-0310-x

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Geometry of bisections of elliptic surfaces and Zariski N-plets for conic arrangements2015

    • Author(s)
      S. Bannai and H. Tokunaga
    • Journal Title

      Geom. Decicata

      Volume: 178

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 2次被覆の arithmetic と平面曲線のトポロジー2018

    • Author(s)
      徳永浩雄
    • Organizer
      代数学シンポジウム
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] The topology of plane curves and "arithmetic" of P^22018

    • Author(s)
      Hiro-o Tokunaga
    • Organizer
      15th International Conference Zaragoza-Pau on Mathematics and its Applications
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On the topology of plane curves and "arithmetic" of P^22018

    • Author(s)
      Hiro-o Tokunaga
    • Organizer
      Seminario de Algebra, Geometria y Topologia
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A remark on certain cubic-line arrangements and elliptic surfaces2018

    • Author(s)
      Hiro-o Tokunaga
    • Organizer
      On hyperplane arrangements, configuration spaces and related topics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Arithmetic of double covers of P^22018

    • Author(s)
      Hiro-o Tokunaga
    • Organizer
      -the topology of reducible plane curves-, A walk between hyperplane arrangements
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Topology of arrangements of plane curves with low degree and arithmetic of double covers of P22018

    • Author(s)
      Hiro-o Tokunaga
    • Organizer
      特異点論とその応用 「泉屋周一先生退職記念研究集会」
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Galois lines for space curves2017

    • Author(s)
      吉原久夫
    • Organizer
      10th Workshop on Galois point and related topics
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Galois embedding of algebraic variety and some of its applications2017

    • Author(s)
      Hisao Yoshihara
    • Organizer
      Research conference and 2017 convention of the mathematical society of the Philippines
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Cubic-line 配置のトポロジーについて2017

    • Author(s)
      徳永浩雄
    • Organizer
      10th Workshop on Galois point and related topics
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Rational points of elliptic surfaces and cubic-line arrangements2017

    • Author(s)
      Hiro-o Tokunaga
    • Organizer
      Seminario Geometria y Topologia, Universidad de Zaraggoza
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 楕円曲面の有理点とcubic-line arrangements2017

    • Author(s)
      徳永浩雄
    • Organizer
      射影多様体の幾何とその周辺,高知大学
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] On the topology of reducible plane curves2017

    • Author(s)
      徳永浩雄
    • Organizer
      Topology of Singularity in Hanoi
    • Place of Presentation
      VIASM(Hanoi)
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Geometry of contact conics2016

    • Author(s)
      H. Tokunaga
    • Organizer
      Workshop on Hyperplane Arrangements and Singularity Theory
    • Place of Presentation
      北海道大学 (札幌市)
    • Year and Date
      2016-03-23
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Degree six Galois embedding of elliptic curve2016

    • Author(s)
      吉原久夫
    • Organizer
      Workshop on Galois point and related topics
    • Place of Presentation
      新潟大学駅南キャンパス
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] A remark on the topology of reducible plane curves2016

    • Author(s)
      徳永浩雄
    • Organizer
      第13回代数曲面ワークショップ
    • Place of Presentation
      高知工科大学
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] On the toplogy of reducible plane curves2016

    • Author(s)
      徳永浩雄
    • Organizer
      Tsuda College and OIST joint workshop on Calabi-Yau varieties
    • Place of Presentation
      津田塾大学
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] A remark on the topology of reducible curves2016

    • Author(s)
      徳永浩雄
    • Organizer
      Seminario de Geometria y Topologia
    • Place of Presentation
      Universidad de Zaragoza
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Integral sections of rational elliptic surfaces and contact conics to an irreducible 3-nodal quartic2015

    • Author(s)
      H. Tokunaga
    • Organizer
      Topology and Combinatorics of Hyperplane Arrangements and Related Problems
    • Place of Presentation
      Zaragoza (Spain)
    • Year and Date
      2015-09-18
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] Galois point and related topics

    • URL

      http://hyoshihara.web.fc2

    • Related Report
      2018 Annual Research Report
  • [Remarks] GALOIS POINT AND RELATED TOPICS

    • URL

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

    • Related Report
      2017 Research-status Report
  • [Remarks] Galois point and related topics

    • URL

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

    • Related Report
      2016 Research-status Report 2015 Research-status Report

URL: 

Published: 2015-04-16   Modified: 2020-03-30  

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