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Categorification of special function

Research Project

Project/Area Number 17K18726
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Algebra, Geometry, and related fields
Research InstitutionKyushu University

Principal Investigator

OCHIAI HIROYUKI  九州大学, マス・フォア・インダストリ研究所, 教授 (90214163)

Research Collaborator Dorjgotov Khongorzul  モンゴル国立大学
Zunderiya Uuganbayar  モンゴル国立大学
Project Period (FY) 2017-06-30 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2018: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords特殊関数 / リー環 / 変数分離 / 超幾何関数 / 一般ライト関数 / 対称性 / 分数階微分 / 圏論 / D加群 / 母関数 / 軌道分解
Outline of Final Research Achievements

Separation of variables is one of the origin of special functions. We determine the symmetry of a fractional partial differential equation, and discuss the scheme of the separation of variables in fractional case. As well as the decomposition of the manifold by the group action, the choice of independent variables are shown to be a key of the separation of variables, especially in the fractional case. As a corollary, we obtain a new expression of solution of such a fractional partial differential equation in terms Mittag-Leffler functions and generalized Wright functions. We also give the system of the fundamental equations on the coefficient functions, and with the help of inductive structure, we are able to determine the symmetry Lie algebra for a fractional partial differential equations.

Academic Significance and Societal Importance of the Research Achievements

特殊関数の一つの典型的な現れ方として、群作用に関する軌道分解によって偏微分方程式系から常微分方程式を得るプロセスがあるが、これを圏化するスキームを考えた。特に軌道分解が直既約とならない場合に軌道分解の複雑さを記述する関数系として特殊関数は、古典的に複比の持つ不変式的な構造と、ブリューア分解の持つ離散組み合わせ的な構造を併せ持つものであり、圏化によるアプローチに優位性があるものである。

Report

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

    (16 results)

All 2019 2018 2017 Other

All Int'l Joint Research (4 results) Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 5 results) Remarks (2 results)

  • [Int'l Joint Research] Anges 大学(フランス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] 国立モンゴル大学(モンゴル)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Angers(France)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] National Unviersity of Mongolia(Mongolia)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Exact solutions to a class of time fractional evolution systems with variable coefficients2018

    • Author(s)
      Dorjgotov, Khongorzul; Ochiai, Hiroyuki; Zunderiya, Uuganbayar
    • Journal Title

      J. Math. Phys

      Volume: 59 Pages: 081504-081504

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Lie symmetry analysis of a class of time fractional nonlinear evolution systems2018

    • Author(s)
      Dorjgotov, Khongorzul; Ochiai, Hiroyuki; Zunderiya, Uuganbayar
    • Journal Title

      Appl. Math. Comput.

      Volume: 329 Pages: 105-117

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Lie symmetry analysis of a class of time fractional nonlinear evolution systems2018

    • Author(s)
      Khongorzul Dorjgotov, Hiroyuki Ochiai and Uuganbayar Zunderiya
    • Journal Title

      Appl. Math. Comput

      Volume: 329

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] On the Letac-Massam Conjecture on cones Q_{A_n}2017

    • Author(s)
      Piotr Graczyk, Hideyuki Ishi, Salha Mamane, and Hiroyuki Ochiai
    • Journal Title

      Proc. Japan Acad. Ser. A Math. Sci.

      Volume: 93

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Nilpotent orbits in complex simple Lie algebras and prehomogeneous vector spaces2019

    • Author(s)
      落合啓之
    • Organizer
      研究集会 “Representation theory of reductive Lie groups and algebras”
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 超幾何関数のリー環対称性について2018

    • Author(s)
      落合啓之
    • Organizer
      研究集会「微分方程式と表現論」
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Gamma factors of Selberg's zeta functions and absolute zeta functions2018

    • Author(s)
      落合啓之
    • Organizer
      研究集会「多重三角関数とその一般化」神戸大学
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 微分方程式の対称性と軌道分解2017

    • Author(s)
      落合啓之
    • Organizer
      研究会『特殊函数と双対性』九大数理
    • Related Report
      2017 Research-status Report
  • [Presentation] Zeros of Eulerian polynomials2017

    • Author(s)
      H. Ochiai
    • Organizer
      研究集会「多重ゼータ関数の諸相」名古屋大学
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Making a bridge between Ibukiyama and Kobayashi2017

    • Author(s)
      H. Ochiai
    • Organizer
      第20回整数論オータムワークショップ, ホテルアベスト八方アルディラ
    • Related Report
      2017 Research-status Report
    • Invited
  • [Remarks]

    • URL

      http://user.math.kyushu-u.ac.jp/index.php?ochiai

    • Related Report
      2018 Annual Research Report
  • [Remarks]

    • URL

      http://user.math.kyushu-u.ac.jp/index.php?ochiai

    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-07-21   Modified: 2020-03-30  

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