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E-polynomials and combinatorics

Research Project

Project/Area Number 17K05164
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

Oura Manabu  金沢大学, 数物科学系, 教授 (50343380)

Co-Investigator(Kenkyū-buntansha) 小須田 雅  山梨大学, 大学院総合研究部, 教授 (40291554)
三枝崎 剛  琉球大学, 教育学部, 准教授 (60584068)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords代数的組合せ論 / 不変式論 / モジュラー形式 / 符号 / 不変式 / 重み多項式 / 置換群 / E-多項式 / 中心化環
Outline of Final Research Achievements

We studied algebraic combinatorics widely. We consider the ring generated by the g-th weight enumerators of self-dual and doubly even codes of dn+. It is finitely generated over the complex numbers C and we determined the generators for g=1,2. We gave the relation between the g-th weight enumerators and the complete cycle index of the permutation group obtained from codes. We studied Duursma's zeta polynomial of E-polynomials. We defined the g-th Tutte polynomials and studied its properties. We generalized Ozeki's Jacobi polynomials. We discussed the concept of E-polynomials in classical invariant theory.

Academic Significance and Societal Importance of the Research Achievements

代数的組合せ論にとどまらず、モジュラー形式の理論への応用・観点を交えた研究を行った。個々の研究について、様々な観点から見ることができ、今後の研究、発展性も与えたと考えている。特に有限と無限の双方向の研究を行っているとみる事ができ、興味深いと思われる。また計算機を本質的に利用しており、この点も強調したい。今後はそれぞれの分野において、更に深く研究を行い、各分野の未解決問題に取り組んだり、新しい研究分野の発見に取り組んでいく。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (14 results)

All 2020 2019 2018 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (3 results) Funded Workshop (1 results)

  • [Journal Article] On Eisenstein polynomials and zeta polynomials II2020

    • Author(s)
      Tsuyoshi Miezaki, Manabu Oura
    • Journal Title

      International Journal of Number Theory

      Volume: 1 Issue: 01 Pages: 207-218

    • DOI

      10.1142/s1793042120500116

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A generalization of the Tutte polynomials2019

    • Author(s)
      Tsuyoshi Miezaki, Manabu Oura, Tadashi Sakuma, Hidehiro Shinohara
    • Journal Title

      Proceedings of the Japan Academy, Ser. A Mathematical Sciences

      Volume: 95 Issue: 10 Pages: 111-113

    • DOI

      10.3792/pjaa.95.111

    • NAID

      40022103495

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] On the cycle index and the weight enumerator2018

    • Author(s)
      Tsuyoshi Miezaki, Manabu Oura
    • Journal Title

      Designs, Codes and Cryptography

      Volume: 印刷中 Issue: 6 Pages: 1237-1242

    • DOI

      10.1007/s10623-018-0518-x

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ring of the weight enumerators of d_n^+2018

    • Author(s)
      M.Fujii, M.Oura
    • Journal Title

      Tsukuba Journal of Mathematics

      Volume: 42 Pages: 53-63

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Ring of the weight enumerators of triply even codes2019

    • Author(s)
      Manabu Oura
    • Organizer
      5th Biennial International Group Theory Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On weight enumerators2019

    • Author(s)
      大浦 学
    • Organizer
      研究集会「組合せ論的符号理論」
    • Related Report
      2018 Research-status Report
  • [Presentation] Coding theory and some finite groups2019

    • Author(s)
      大浦 学
    • Organizer
      Meeting of number theory, ring theory, Hopf algebra theory and related topics
    • Related Report
      2018 Research-status Report
  • [Presentation] Symmetric group and classical invariant theory2018

    • Author(s)
      大浦 学
    • Organizer
      International Symposium on Computational Science 2018
    • Related Report
      2018 Research-status Report
  • [Presentation] 完全巡回指数の導入2018

    • Author(s)
      三枝崎 剛
    • Organizer
      日本数学会秋季総合分科会
    • Related Report
      2018 Research-status Report
  • [Presentation] タット多項式の高種数化2018

    • Author(s)
      三枝崎 剛
    • Organizer
      日本数学会秋季総合分科会
    • Related Report
      2018 Research-status Report
  • [Remarks] Manabu Oura

    • URL

      http://sphere.w3.kanazawa-u.ac.jp/

    • Related Report
      2019 Annual Research Report
  • [Remarks] 大浦 学

    • URL

      http://sphere.w3.kanazawa-u.ac.jp/

    • Related Report
      2018 Research-status Report
  • [Remarks]

    • URL

      http://sphere.w3.kanazawa-u.ac.jp/

    • Related Report
      2017 Research-status Report
  • [Funded Workshop] 「代数的組合せ論と関連する群と代数の研究」2018

    • Related Report
      2018 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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