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Research on Hurwitz's problem and K3 surfaces through double covers of curves and symmetric numerical semigroups

Research Project

Project/Area Number 15K04830
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Algebra
Research InstitutionKanagawa Institute of Technology

Principal Investigator

Komeda Jiryo  神奈川工科大学, 公私立大学の部局等, 教授 (90162065)

Co-Investigator(Renkei-kenkyūsha) OHBUCHI Akira  徳島大学, 大学院ソシオアーツアンドサイエンス研究部 (10211111)
Research Collaborator MATSUTANI Shigeki  
TAKAHASI Takeshi  
HARUI Takeshi  
KAWAGUCHI Ryo  
WATANABE Kenta  
MASE Makiko  
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsワイエルシュトラス半群 / ガロア・ワイエルシュトラス点 / 2重被覆 / 代数曲線の3重被覆 / 平面代数曲線 / K3曲面 / トーリック曲面 / 射影直線の巡回被覆 / 2重被覆 / 3重被覆 / 種数4の代数曲線 / 代数曲線 / 二重被覆 / 数値半群 / 対称数値半群 / Weierstrass半群 / Galois Weierstrass点 / 平面曲線
Outline of Final Research Achievements

A research collaboration person and I wrote the article on the conditions for Weierstrass semigroups gained from those of ramification points of double coverings, which was published. An overseas collaborator and I wrote the articles on the Weierstrass semigroups of the ramification points of double covering of plane curves of degree 6 (resp. 5) over total flexes (resp. total flexes and non-ordinary flexes), which were also published. The articles on Galois Weierstrass points (resp. Riemann constants) were published. Those papers are joint works with research collaboration people. Moreover, the other two accepted articles were published.
The three papers were published in the research reports of my university and the other three articles were published in RIMS Kokyuroku. Moreover, the number of oral presentations in workshops is 11. A research collaboration person and I organized the symposium on algebraic curves every year.

Report

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

    (29 results)

All 2018 2017 2016 2015 Other

All Int'l Joint Research (3 results) Journal Article (15 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 12 results,  Acknowledgement Compliant: 8 results) Presentation (11 results)

  • [Int'l Joint Research] Gyeongsang National University(韓国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Gyeongsang National University(韓国)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] Gyeongsang National University(韓国)

    • Related Report
      2015 Research-status Report
  • [Journal Article] The Sigma-function of cyclic trigonal curves2018

    • Author(s)
      Jiryo Komeda, Emma Previato and Shigeki Matsutani
    • Journal Title

      Letters in Mathematical Physics

      Volume: 印刷中

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Pseudo-Frobenius numbers of numerical semigroups with high conductor2018

    • Author(s)
      Jiryo Komeda
    • Journal Title

      神奈川工科大学研究報告

      Volume: B-42 Pages: 41-46

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Weierstrass semigroups on double covers of plane curves of degree six with total flexes2018

    • Author(s)
      Seon Jeong Kim and Jiryo Komeda
    • Journal Title

      Bull. Korean Math. Soc.

      Volume: 55 Pages: 611-624

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Numerical semigroups and triple cyclic covers of curves2017

    • Author(s)
      Jiryo Komeda
    • Journal Title

      RIMS Kokyuroku

      Volume: 2051 Pages: 116-119

    • Related Report
      2017 Annual Research Report
  • [Journal Article] On γ-hyperelliptic Weierstrass semigroups of genus 6γ+1 and 6γ2017

    • Author(s)
      Jiryo Komeda and Akira Ohbuchi
    • Journal Title

      Bulletin of the Brazilian Mathematical Society

      Volume: 印刷中 Issue: 2 Pages: 209-218

    • DOI

      10.1007/s00574-016-0002-z

    • NAID

      120006802068

    • Related Report
      2017 Annual Research Report 2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Relating Galois points to weak Galois Weierstrass points through double coverings of curves2017

    • Author(s)
      Jiryo Komeda and Takeshi Takahashi
    • Journal Title

      J. Korean Math. Soc.

      Volume: 54 Issue: 1 Pages: 69-86

    • DOI

      10.4134/jkms.j150593

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Weierstrass semigroups of ramification points on double covers of curves over ordinary points2017

    • Author(s)
      Jiryo Komeda
    • Journal Title

      神奈川工科大学研究報告

      Volume: B-41 Pages: 1-4

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] The Riemann constant for a non-symmetric Weierstrass semigroup2016

    • Author(s)
      Jiryo Komeda, Shigeki Matsutani and Emma Previato
    • Journal Title

      Archiv der Mathematik

      Volume: 107 Issue: 5 Pages: 499-509

    • DOI

      10.1007/s00013-016-0962-7

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Numerical semigroups attained by double covers of plane curves of degree six2016

    • Author(s)
      Jiryo Komeda
    • Journal Title

      RIMS Kokyuroku

      Volume: 2008 Pages: 100-106

    • Related Report
      2016 Research-status Report
    • Acknowledgement Compliant
  • [Journal Article] The proportion of numerical semigroups with high conductor2016

    • Author(s)
      Jiryo Komeda
    • Journal Title

      Research Reports of Kanagawa Institute of Technology Part B

      Volume: 40 Pages: 7-9

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Relating Galois points to weak Galois Weierstrass points through double coverings of curves2016

    • Author(s)
      Jiryo Komeda and Takeshi Takahashi
    • Journal Title

      Journal of Korean Mathematical Society

      Volume: 印刷中

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Weierstrass semigroups on double covers of plane curves of degree 52015

    • Author(s)
      Seon Jeong Kim and Jiryo Komeda
    • Journal Title

      Kodai Mathematical Journal

      Volume: 38 Pages: 270-288

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] On extensions of a double covering of plane curves and Weierstrass semigroups of the double covering type2015

    • Author(s)
      Jiryo Komeda, Kenta Watanabe
    • Journal Title

      Semigroup Forum

      Volume: 印刷中 Issue: 2 Pages: 517-523

    • DOI

      10.1007/s00233-015-9718-0

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Quasi-symmetric numerical semigroups and double covers of curves2015

    • Author(s)
      Jiryo Komeda
    • Journal Title

      RIMS Kokyuroku

      Volume: 1964 Pages: 55-60

    • Related Report
      2015 Research-status Report
  • [Journal Article] Numerical semigroups of genus six and double coverings of curves of genus three2015

    • Author(s)
      Takeshi Harui, Jiryo Komeda
    • Journal Title

      Semigroup Forum

      Volume: 印刷中 Issue: 3 Pages: 601-610

    • DOI

      10.1007/s00233-014-9671-3

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Presentation] Diagrams of numerical semigroups whose general members are non-Weierstrass2018

    • Author(s)
      Jiryo komeda
    • Organizer
      「代数系、論理、言語とその周辺領域」共同研究(公開型)
    • Related Report
      2017 Annual Research Report
  • [Presentation] Numerical semigroups with high conductor2017

    • Author(s)
      Jiryo Komeda
    • Organizer
      Mini Workshop 2017 on Algebraic Systems and Theoretical Computer Science
    • Place of Presentation
      京都産業大学
    • Year and Date
      2017-02-23
    • Related Report
      2016 Research-status Report
  • [Presentation] Numerical semigroups and cyclic triple covers of curves2017

    • Author(s)
      Jiryo Komeda
    • Organizer
      「言語、論理、代数系と計算機科学の展開」研究集会
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2017-02-20
    • Related Report
      2016 Research-status Report
  • [Presentation] Numerical semigroups with high conductor and Galois covers of curves2017

    • Author(s)
      Jiryo Komeda
    • Organizer
      KIAS Seminars
    • Related Report
      2017 Annual Research Report
  • [Presentation] Weierstrass semigroups on Galois covers of degree two or three2017

    • Author(s)
      Jiryo Komeda
    • Organizer
      10th Workshop on Galois point and related topics
    • Related Report
      2017 Annual Research Report
  • [Presentation] Numerical semigroups gained by dividing numerical semigroups by three2017

    • Author(s)
      Jiryo Komeda
    • Organizer
      形式言語とオートマトン研究会 Nagaokakyo Seminar
    • Related Report
      2017 Annual Research Report
  • [Presentation] Almost symmetric numerical semigroups and double covers of curves2016

    • Author(s)
      Jiryo Komeda
    • Organizer
      研究集会「代数曲線・曲面とその周辺」
    • Place of Presentation
      大阪大学理学部
    • Year and Date
      2016-11-26
    • Related Report
      2016 Research-status Report
  • [Presentation] Almost symmetric numerical semigroups of multiplicity 4 or 6 from a view point of algebraic curves2016

    • Author(s)
      Jiryo Komeda
    • Organizer
      形式言語とオートマトン研究会
    • Place of Presentation
      長岡京中央生涯学習センター
    • Year and Date
      2016-05-13
    • Related Report
      2016 Research-status Report
  • [Presentation] Numerical semigroups attained by double covers of plane curves of degree six2016

    • Author(s)
      Jiryo Komeda
    • Organizer
      RIMS研究集会「代数系、論理、言語と計算機科学」
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2016-02-16
    • Related Report
      2015 Research-status Report
  • [Presentation] 非特異平面4次曲線の二重被覆上のワイエルシュトラス半群2016

    • Author(s)
      Jiryo Komeda
    • Organizer
      中央大学代数セミナー
    • Place of Presentation
      中央大学理工学部数学科
    • Year and Date
      2016-01-22
    • Related Report
      2015 Research-status Report
  • [Presentation] The existence of curves with certain Weierstrass semigroups on double covers of P(1,1,4)2015

    • Author(s)
      Jiryo Komeda
    • Organizer
      Workshop on Galois point and related topics
    • Place of Presentation
      神奈川大学横浜キャンパス
    • Year and Date
      2015-09-05
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2022-07-19  

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