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Construction of concrete theory of Abelian functions focusing the multivariate sigma functions

Research Project

Project/Area Number 25400010
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Algebra
Research InstitutionMeijo University (2014-2015)
University of Yamanashi (2013)

Principal Investigator

Onishi Yoshihiro  名城大学, 理工学部, 教授 (60250643)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
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)
KeywordsAbelian function / Jacobian variety / Abelian variety / algebraic curve / Abelian functions / Jacobian varieties / sigma function / elliptic function / addition formula / Abel 函数 / sigma 函数 / 代数的加法公式 / Jacobi 多様体
Outline of Final Research Achievements

(1) I published a paper on new addition formulae for genus one case, which is a result of collaboration with J.C. Eilbeck and M. England. (2) I generalized the result in (1) to any plane telescopic curves. I am writing a paper on this. (3) I discovered that the sigma functions have Hurwitz integrality on the power series expansion at the origin. (4) I proved this phenomenon, wrote a paper, and submitted it.
\item I had talks in Japan on the results of (2) and (3). (5) According to my best knowledge, there is no explicit description of example of Abelian variety which has non-Galois complex multiplication. I found it and wrote a note on it. You can download it from my web page. (6) I invited Eilbeck in order to research on the theory of heat equations satisfied by the sigma functions. We two got a large amount of results by this research. We are writing papers on the results.

Report

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

    (11 results)

All 2015 2014 2013 Other

All Journal Article (3 results) (of which Open Access: 1 results,  Peer Reviewed: 2 results,  Acknowledgement Compliant: 1 results) Presentation (4 results) (of which Invited: 3 results) Book (1 results) Remarks (3 results)

  • [Journal Article] Hurwitz integrality of power series expansion of the sigma function for a plane curve2015

    • Author(s)
      Yoshihiro Onishi
    • Journal Title

      arxiv.org (http://arxiv.org/abs/1510.03002)

      Volume: - Pages: 1-27

    • Related Report
      2015 Annual Research Report
    • Open Access
  • [Journal Article] Some new addition formulae for Weierstrass elliptic functions2014

    • Author(s)
      J. C. Eilbeck, M. England, and Y. Onishi
    • Journal Title

      Proceedings of Royal Society, A

      Volume: 470:2171 Issue: 2172 Pages: 20140514-20140514

    • DOI

      10.1098/rspa.2014.0514

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Relationship between the prime form and the sigma function for some cyclic (r,s) curves2013

    • Author(s)
      J.Gibbons, S.Matsutani, and Y.Onishi
    • Journal Title

      Journal of Physics A: Mathematical and Theoretical

      Volume: 46 Issue: 17 Pages: 175203-175203

    • DOI

      10.1088/1751-8113/46/17/175203

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] New addition formulae for Weierstrass elliptic functions and for higher genus Abelian functions2015

    • Author(s)
      Onishi Yoshihiro
    • Organizer
      Curves, Moduli and Integrable Systems
    • Place of Presentation
      津田塾大学 (東京都小平市)
    • Year and Date
      2015-02-17
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] New addition formulae for Weierstrass elliptic functions and for higher genus Abelian functions2014

    • Author(s)
      Onishi Yoshihiro
    • Organizer
      Japan-Korea Joint Seminar on Number Theory and Related Topics 2014
    • Place of Presentation
      慶応義塾大学矢上キャンパス
    • Year and Date
      2014-11-19 – 2014-11-22
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] 多変数 sigma 函数の原点における羃級数展開の Hurwitz 整性2014

    • Author(s)
      大西良博
    • Organizer
      第 15 回 愛知数論セミナー
    • Place of Presentation
      愛知工業大学 (名古屋市)
    • Year and Date
      2014-06-14
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Bernoulli 数の種々の一般化に対する Kummer 合同式の法を与へる素数羃の評価2014

    • Author(s)
      大西良博
    • Organizer
      三浦康秀先生ご退職記念研究集会 “Dynamics and Special Functions"
    • Place of Presentation
      岩手大学 (岩手県盛岡市)
    • Related Report
      2013 Research-status Report
  • [Book] Abel 函数2013

    • Author(s)
      大西良博
    • Total Pages
      113
    • Publisher
      中央大学理工学部
    • Related Report
      2013 Research-status Report
  • [Remarks] Yoshihiro Onishi

    • URL

      http://www2.meijo-u.ac.jp/~yonishi/

    • Related Report
      2015 Annual Research Report
  • [Remarks] Home Page of Yoshihiro Onishi

    • URL

      http://www2.meijo-u.ac.jp/~yonishi/#publications

    • Related Report
      2014 Research-status Report
  • [Remarks] 大西良博, publications

    • URL

      http://www.ccn.yamanashi.ac.jp/~yonishi/#publications

    • Related Report
      2013 Research-status Report

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

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