HIRAYAMA Hiroyuki

写真a

Affiliation

Faculty of Education Mathematics education

Title

Associate Professor

External Link

Degree 【 display / non-display

  • 博士(数理学) ( 2014.3   名古屋大学 )

Research Areas 【 display / non-display

  • Natural Science / Mathematical analysis  / Partial differential equations

 

Papers 【 display / non-display

  • Sharp well-posedness for the Cauchy problem of the two dimensional quadratic nonlinear Schrödinger equation with angular regularity Reviewed

    Hiroyuki Hirayama, Shinya Kinoshita, Mamoru Okamoto

    Journal of Differential Equations   234   2024.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.jde.2024.02.037

  • Large time behavior and optimal decay estimate for solutions to the generalized Kadmtsev-Petviashvili-Burgers equation in 2D Reviewed

    Ikki Fukuda, Hiroyuki Hirayama

    Nonlinear Analysis   234   2023.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.na.2023.113322

  • A remark on the well-posedness for a system of quadratic derivative nonlinear Schrödinger equations Reviewed

    Hiroyuki Hirayama, Shinya Konoshita, Mamoru Okamoto

    Communications on Pure and Applied Analysis   21 ( 10 )   3309 - 3334   2022.10

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.3934/cpaa.2022101

  • Well-posedness for a system of quadratic derivative nonlinear Schrödinger equations in almost critical spaces Reviewed

    Hirayama H., Kinoshita S., Okamoto M.

    Journal of Mathematical Analysis and Applications   499 ( 2 )   2021.7

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Journal of Mathematical Analysis and Applications  

    In this paper, we consider the Cauchy problem of the system of quadratic derivative nonlinear Schrödinger equations introduced by Colin and Colin (2004). We determine an almost optimal Sobolev regularity where the smooth flow map of the Cauchy problem exists, except for the scaling critical case. This result covers a gap left open in papers of the first and second authors (2014, 2019).

    DOI: 10.1016/j.jmaa.2021.125028

    Scopus

  • Well-posedness for the fourth-order Schrödinger equation with third order derivative nonlinearities Reviewed

    HIroyuki Hirayama, Masahiro Ikeda, Tomoyuki Tanaka

    Nonlinear Differential Equations and Applications NoDEA   28   2021.6

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    Language:English   Publishing type:Research paper (scientific journal)  

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Books 【 display / non-display

  • 工科系のための偏微分方程式入門

    岡 康之, 平山 浩之, 鈴木 俊夫, 藤ノ木 健介( Role: Joint author)

    学術図書出版社  2023.3 

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    Book type:Scholarly book

MISC 【 display / non-display

  • 微分型非線形シュレディンガー方程式系のほとんど最良なソボレフ空間における適切性について Invited

    平山 浩之

    第60回 実函数論・函数解析学合同シンポジウム 講演集   34 - 53   2021.9

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    Language:Japanese  

  • Well-posedness for a system of quadratic derivative nonlinear Schr¨odinger equations with periodic initial data at the scaling critical regularity

    平山 浩之

    第5 回白浜研究集会報告集   99 - 108   2014.2

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    Language:Japanese  

  • トーラス上の高階次分散型方程式の時間局所適切性について

    平山 浩之

    第31 回発展方程式若手セミナー 報告集   223 - 236   2009.12

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    Language:Japanese  

Presentations 【 display / non-display

  • Variational problems for the system of nonlinear Schrodinger equations with quadratic derivative nonlinearities Invited

    平山 浩之

    Takamatsu Workshop on Differential Equations and Related Topics 

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    Event date: 2024.3.26 - 2024.3.27

    Presentation type:Oral presentation (general)  

  • 一般化 Zakharov–Kuznetsov–Burgers 方程式の初期値問題の解の長時間挙動と最良な減衰評価について

    福田 一貴, 平山 浩之

    日本数学会2023年度秋季総合分科会  (中央大学)  2023.3.17 

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    Event date: 2023.9.20 - 2023.9.23

    Presentation type:Oral presentation (general)  

    Venue:中央大学  

  • Existence and stability of the ground states to the system of nonlinear Schrodinger equations with derivative nonlinearity Invited

    平山 浩之

    応用解析研究会 

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    Event date: 2023.5.27

    Presentation type:Oral presentation (general)  

  • Large time behavior and optimal decay estimate for solutions to the generalized KP-Burgers equation Invited

    平山 浩之

    NLPDEセミナー 

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    Event date: 2023.5.26

    Presentation type:Oral presentation (general)  

  • Existence and stability of the ground states to the system of nonlinear Schrodinger equations with derivative nonlinearity Invited

    平山 浩之

    九州関数方程式セミナー 

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    Event date: 2023.5.19

    Presentation type:Oral presentation (general)  

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Awards 【 display / non-display

  • Outstanding Contribution in Reviewing

    2018.7   ELSEVIER Nonlinear Analysis  

    Hiroyuki Hirayama

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

Grant-in-Aid for Scientific Research 【 display / non-display

  • パラメーターを含む非線形分散型方程式の連立系に対する時間大域的可解性について

    Grant number:21K13825  2021.04 - 2025.03

    独立行政法人日本学術振興会  科学研究費補助金  若手研究

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    Authorship:Principal investigator 

  • Lie 群構造をもつ非線形発展方程式の可解性の解明

    Grant number:21K03333  2021.04 - 2024.03

    独立行政法人日本学術振興会  科学研究費補助金   基盤研究(C)

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    Authorship:Coinvestigator(s) 

  • 複雑な共鳴構造を持つ非線形分散型方程式の可解性について

    Grant number:17K14220  2017.04 - 2023.03

    科学研究費補助金  若手研究(B)

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    Authorship:Principal investigator 

  • 臨界指数のソボレフ空間における非線型分散型方程式の適切性の解明

    Grant number:14J00069  2014.04 - 2015.10

    科学研究費補助金  特別研究員奨励費

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    Authorship:Principal investigator 

Other research activities 【 display / non-display

  • 第7回 PDE Workshop in Miyazaki

    2024.01

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    研究集会「第7回 PDE Workshop in Miyazaki」を開催した。
    https://www.cc.miyazaki-u.ac.jp/pde/

  • 数学と現象:Mathematics and Phenomena in Miyazaki 2023

    2023.11

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    研究集会「数学と現象:Mathematics and Phenomena in Miyazaki 2023」の世話人を行った。
    https://www.cc.miyazaki-u.ac.jp/math/mpm/mpm2023/

  • 第4回 大同大学 若手微分方程式セミナー

    2023.08

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    研究集会「第4回 大同大学 若手微分方程式セミナー」を開催した。
    https://sites.google.com/view/daidowrks

  • 第6回 PDE Workshop in Miyazaki

    2023.01

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    研究集会「第6回 PDE Workshop in Miyazaki」を開催した。
    https://www.cc.miyazaki-u.ac.jp/pde/

  • 第3回 大同大学 若手微分方程式セミナー

    2022.08

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    研究集会「第3回 大同大学 若手微分方程式セミナー」を開催した。
    https://www.daido-news.jp/du_news/notice/2986.html

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