• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

K3 modular functions and hypergeometric period differential equations

Research Project

Project/Area Number 19K03396
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 11010:Algebra-related
Research InstitutionChiba University

Principal Investigator

Shiga Hironori  千葉大学, 大学院理学研究院, 名誉教授 (90009605)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsK3 曲面 / 保型形式 / 超幾何微分方程式 / テータ函数 / 虚数乗法論 / 多変数保型形式 / 複素多様体のモジュライ / 高次虚数乗法論 / K3曲面 / 複素鏡映群 / 周期微分方程式 / modular forms / K3 surfaces / complex multiplication / hypergeometric equations / hypergeometric equation / modular function / K3 surface / modular form / 多変数保形関数
Outline of Research at the Start

本研究は K3 保型関数の明示的な構成とその数論への応用を図り、さらに超幾何微分方程式の観点から保型関数の構造を研究することを目的とする。
この原型は、 19 世紀、楕円曲線族から得られた楕円モジュラー関数に求められる。その際、楕円積分がパラメーターの関数としてガウス超幾何微分方程式を満たしている点も参照したい。
研究代表者は、19 世紀数学の華ともいうべき、この原型保型関数論の高次化をめざし、``K3 モジュラー函数" 標榜してきた。
近年 (1990 以降) K3 保型関数は、数理物理におけるミラー対称性との関連が注目されているが、この初心を貫きつつ、ミラー的現象も独自の視点で研究を進める。

Outline of Final Research Achievements

I made my study progression according to the research plan presented as S-14 in the application paper to JSPS. In section 3.1 I listed up the academic papers, oral talks at the academic meeting and concentrated academic lectures that I obtained at the beginning of this project. After that I published 5 academic papers, 7 oral academic talks and 3 concentrated lectures cited on Researchmap. The detail of the result is explained in the forthcoming my research argument paper on “Sugaku” (2024). The supporting argument for it is already open on my Researchmap private seminar note, with already over 500 download accesses.

Academic Significance and Societal Importance of the Research Achievements

本プロジェクトにとどまらず、研究代表者の研究は、一貫してK3 保型関数の明示的構成によって、19世紀数学の華であった保型形式的数論の拡張を目指し、同時に、数理物理学の基本問題であるミラー対称性の研究にも一定の貢献を果たすことを視野に置いた。
その社会的意義:数学は、西欧古代における発生時点から、森羅万象の根本原理に迫ることを目標としていた。この事実は現代でも変わらない。今日人工知能の価値が喧伝されているが、それは、巨大な有限データを高速処理する技術であり、無限要素を思惟して世界の究極を追求する純粋数学とは別種のものである。本プロジェクトもこの根本姿勢に依拠して、社会的意義を考慮して遂行した。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (26 results)

All 2024 2023 2022 2021 2020 2019

All Journal Article (16 results) (of which Peer Reviewed: 16 results) Presentation (9 results) (of which Int'l Joint Research: 5 results,  Invited: 7 results) Book (1 results)

  • [Journal Article] Geometric Interpretation of Hermitian Modular Forms via Burkhardt Invariants2024

    • Author(s)
      Atsuhira Nagano, Hironori Shiga
    • Journal Title

      Transformation Groups

      Volume: 29 Pages: 253-275

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] K3的超幾何保型形式2024

    • Author(s)
      志賀弘典
    • Journal Title

      数学

      Volume: 1 Pages: 1-30

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On Kummer-like surfaces attached to singularity and modular forms2023

    • Author(s)
      Atsuhira Nagano, Hironori Shiga
    • Journal Title

      Mathematische Nachrichten

      Volume: 296 Pages: 2513-2534

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] K3 的超幾何保型形式2023

    • Author(s)
      志賀弘典
    • Journal Title

      数学(掲載決定)

      Volume: 1 Pages: 1-30

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] On Kummer-like surfaces attached to singularity and modular forms2023

    • Author(s)
      A. Nagano and H. Shiga
    • Journal Title

      Mathematische Nachrichten (掲載決定 to apper in 2023)

      Volume: 1 Pages: 1-22

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Geometric Interpretation of Hermitian Modular Forms via Burkhardt Invariants2022

    • Author(s)
      A. Nagano and H. Shiga
    • Journal Title

      Transformation Groups (Published on-line)

      Volume: 1 Pages: 1-23

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Geometric Interpretation of Hermitian Modular Forms via Burkhardt Invariants2022

    • Author(s)
      A. Nagano and H. Shiga
    • Journal Title

      Transformation Groups

      Volume: Published on line

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] On Kummer-like surfaces attached to singularity and modular forms2022

    • Author(s)
      A. Nagano and H. Shiga
    • Journal Title

      Mathematische Nachrichten

      Volume: to appear

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 管見的 -- 保型形式入門2021

    • Author(s)
      志賀弘典
    • Journal Title

      数理科学

      Volume: 692

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 楕円積分と楕円函数2021

    • Author(s)
      志賀弘典
    • Journal Title

      数学セミナー

      Volume: 60 -4

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 途上国での数学講義/パキスタンとルワンダでの講義を回顧しつつ2021

    • Author(s)
      志賀弘典
    • Journal Title

      数学セミナー

      Volume: 60-10

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 管見的 -- 保型形式入門2021

    • Author(s)
      志賀弘典
    • Journal Title

      数理科学 59(2) 15 - 23, 2021年2月

      Volume: 59 Pages: 15-23

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] 途上国での数学講義/ パキスタンとルワンダでの滞在を回顧しつつ2021

    • Author(s)
      志賀弘典
    • Journal Title

      数学セミナー 60(4) 50 - 54, 2021年4月

      Volume: 60 Pages: 50-54

    • NAID

      40022503911

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] An explicit Shimura canonical model for the quaternion algebra of discriminant 62020

    • Author(s)
      Hironori Shiga
    • Journal Title

      RIMS Kokyuroku Bessatsu B77 127 - 140, 2020年

      Volume: 77 Pages: 127-140

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] An explicit Shimura canonical model for the quaternion algebra of discriminant 62020

    • Author(s)
      Hironori Shiga
    • Journal Title

      RIMS Kokyuroku Bessatsu

      Volume: B77

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] The Shimura canonical model for the quaternion algebra of discriminant 6 on the Ihara-Kurihara conic2019

    • Author(s)
      Hironori Shiga
    • Journal Title

      J. Number THeory

      Volume: 201

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Backstage of K3-hypergeometric Arithmetic-Geometric mean2023

    • Author(s)
      志賀弘典
    • Organizer
      第19回北陸数論集会
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A story of K3 hypergeometric modular forms2022

    • Author(s)
      Hironori Shiga
    • Organizer
      , Roma Univ. La Sapienza
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] K3 hypergeometric modular forms2022

    • Author(s)
      Hironori Shiga
    • Organizer
      Seminario su Geometria algebrica e teoria dei numeri, dep. math. Padova Univ.
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Mark 付き K3 曲面族の GKZ 秋季微分方程式的接近2022

    • Author(s)
      志賀弘典
    • Organizer
      アクセサリー・パラメータ研究集会、於熊本大学
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Mark 付き K3 曲面族の GKZ 周期微分方程式的接近2022

    • Author(s)
      志賀弘典
    • Organizer
      アクセサリー・パラメータ研究集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 単純 K3 特異点から導かれる保型形式環の明示2020

    • Author(s)
      Hironori Shiga
    • Organizer
      特異点セミナー 2020年11月2日(リモート研究集会)
    • Related Report
      2020 Research-status Report
  • [Presentation] Hypergeometric Modular functions and the Shimura canonical model with applications2019

    • Author(s)
      Hironori Shiga
    • Organizer
      Hypergeometric Measures and Multiple Zeta Values
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 報告: AIMS (African Institute for Mathematical Sciences) における、汎アフリカ先端数理教育2019

    • Author(s)
      Hironori Shiga
    • Organizer
      RIKEN iThems のアウトリーチについての研究会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] K3 modular functions and GKZ equations, alla Mandala2019

    • Author(s)
      Hironori Shiga
    • Organizer
      Mini-Conference on special functions, algebra and geometry
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] 数学好きの人のためのブックガイド2020

    • Author(s)
      志賀弘典(分担執筆)
    • Total Pages
      7
    • Publisher
      日本評論社
    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi