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SEKI YUKIHIRO  関 行宏

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Seki Yukihiro  関 行宏

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Researcher Number 50728970
Other IDs
Affiliation (Current) 2025: 東京都立大学, 理学研究科, 准教授
Affiliation (based on the past Project Information) *help 2023: 東京都立大学, 理学研究科, 准教授
2021 – 2022: 鳴門教育大学, 大学院学校教育研究科, 准教授
2020: 大阪市立大学, 大学院理学研究科, 特任准教授
2019: 大阪市立大学, 大学院理学研究科, 特任助教
2018: 東京大学, 大学院数理科学研究科, 特任研究員
2014 – 2015: 九州大学, 数理(科)学研究科(研究院), 助教
Review Section/Research Field
Principal Investigator
Basic Section 12020:Mathematical analysis-related / Mathematical analysis
Keywords
Principal Investigator
特異性解析 / 特異性 / 爆発 / 非線形放物型方程式 / 調和写像流方程式 / Type II / 有界性 / 大域解 / 放物型方程式 / 非線形放物型問題 … More / 爆発解 / 非自己相似的 / 特異性形成 / 走化性方程式系 / 藤田方程式 / 特異点 / 臨界指数 / type II 爆発 / 半線形熱方程式 Less
  • Research Projects

    (3 results)
  • Research Products

    (46 results)
  •  Asymptotic analysis and behavior of free boundary for nonlinear parabolic problemsPrincipal Investigator

    • Principal Investigator
      関 行宏
    • Project Period (FY)
      2022 – 2026
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 12020:Mathematical analysis-related
    • Research Institution
      Tokyo Metropolitan University
      Naruto University of Education
  •  Classifications of non-self-similar singularities in nonlinear parabolic equationsPrincipal Investigator

    • Principal Investigator
      Seki Yukihiro
    • Project Period (FY)
      2018 – 2023
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 12020:Mathematical analysis-related
    • Research Institution
      Tokyo Metropolitan University
      Naruto University of Education
      Osaka City University
      The University of Tokyo
  •  Investigation of non-self-similar singularity mechanisms in nonlinear parabolic equationsPrincipal Investigator

    • Principal Investigator
      SEKI YUKIHIRO
    • Project Period (FY)
      2014 – 2015
    • Research Category
      Grant-in-Aid for Research Activity Start-up
    • Research Field
      Mathematical analysis
    • Research Institution
      Kyushu University

All 2024 2023 2022 2021 2020 2019 2018 2016 2015 2014 Other

All Journal Article Presentation Other

  • [Journal Article] Type II blow-up mechanisms in a semilinear heat equation with Lepin exponent2020

    • Author(s)
      Seki Yukihiro
    • Journal Title

      Journal of Differential Equations

      Volume: 268 Issue: 3 Pages: 853-900

    • DOI

      10.1016/j.jde.2019.08.026

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Journal Article] Type II blow-up mechanism in supercritical harmonic map heat flow2019

    • Author(s)
      Pawel Biernat, Yukihiro Seki
    • Journal Title

      International Mathematics Research Notices

      Volume: 2 Issue: 2 Pages: 407-456

    • DOI

      10.1093/imrn/rnx122

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Journal Article] Type II blow-up mechanisms in a semilinear heat equation with critical Joseph-Lundgren exponent2018

    • Author(s)
      Yukihiro Seki
    • Journal Title

      Journal of Functional Analysis

      Volume: 275 Issue: 12 Pages: 3380-3456

    • DOI

      10.1016/j.jfa.2018.05.008

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] 2 次元放物型attraction-repulsion Keller{Segel 系に対する初期値問題について2024

    • Author(s)
      関行宏
    • Organizer
      第 39 回松山キャンプ
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] 2 次元放物型attraction-repulsion Keller{Segel 系に対する初期値問題について2023

    • Author(s)
      関行宏
    • Organizer
      第 39 回松山キャンプ
    • Invited
    • Data Source
      KAKENHI-PROJECT-22K03387
  • [Presentation] 高次元球面に値をとる調和写像流の有限時間爆発に対する漸近解析について2023

    • Author(s)
      関行宏
    • Organizer
      松本偏 微分研究集会
    • Invited
    • Data Source
      KAKENHI-PROJECT-22K03387
  • [Presentation] 高次元球面に値をとる調和写像流の有限時間爆発に対する漸近解析について2023

    • Author(s)
      関行宏
    • Organizer
      松本偏微分方程式研究集会
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] 球面に値をとる調和写像流に対する球対称 爆発解の分類に関する考察2022

    • Author(s)
      関行宏
    • Organizer
      彦根偏微分方程式研究集会
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] 藤田方程式に対する有限時間爆発とその分類について2022

    • Author(s)
      関 行宏
    • Organizer
      「有限時間特異性」勉強会(第5回)
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] 球面に値をとる調和写像流に対する球対称 爆発解の分類に関する考察2022

    • Author(s)
      関行宏
    • Organizer
      Okayama Workshop on Partial Differential Equations
    • Invited
    • Data Source
      KAKENHI-PROJECT-22K03387
  • [Presentation] 球面に値をとる調和写像流に対する球対称 爆発解の分類に関する考察2022

    • Author(s)
      関行宏
    • Organizer
      楕円型・放物型微分方程式研究集会 龍谷大学
    • Invited
    • Data Source
      KAKENHI-PROJECT-22K03387
  • [Presentation] 球面に値をとる調和写像流に対する球対称 爆発解の分類に関する考察2022

    • Author(s)
      関行宏
    • Organizer
      楕円型・放物型微分方程式研究集会 龍谷大学
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] 球面に値をとる調和写像流に対する球対称 爆発解の分類に関する考察2022

    • Author(s)
      関行宏
    • Organizer
      Okayama Workshop on Partial Differential Equations
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] 球面に値をとる調和写像流に対する球対称 爆発解の分類に関する考察2022

    • Author(s)
      関行宏
    • Organizer
      彦根偏微分方程式研究集会
    • Invited
    • Data Source
      KAKENHI-PROJECT-22K03387
  • [Presentation] 調和写像流方程式に対する特異性解析2021

    • Author(s)
      関 行宏
    • Organizer
      RIMS 共同研究(グルー プ型A) 「非線形問題への常微分方程式の手法によるアプローチ」
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] Description of non-self-similar singularities in harmonic map heat flow2021

    • Author(s)
      関 行宏
    • Organizer
      京都大学NLPDEセミナー
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] 非線形放物型方程式に内在する非自己相似的特異性の描写2021

    • Author(s)
      関 行宏
    • Organizer
      数学研究会特別 賞受賞講演会,
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] Description of non-self-similar singularities in harmonic map heat ow2021

    • Author(s)
      Yukihiro Seki
    • Organizer
      OCAMI, International Workshop on Geometric Evolution Equations and Related Fields
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] 球面に値を取る調和写像流方程式の解の爆発について2019

    • Author(s)
      関 行宏
    • Organizer
      解析学研究特別セミナー
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] Transitions of blow-up mechanisms in $k$-equivariant harmonic map heat flow2019

    • Author(s)
      Yukihiro Seki
    • Organizer
      4th Swiss-Japanese PDE Seminar
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] 球面に値を取る調和写像流方程式における爆発構造の遷移2019

    • Author(s)
      関 行宏
    • Organizer
      日本数学会秋季総合分科会
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] Transitions of blow-up mechanisms in $k$-equivariant harmonic map heat flow,2019

    • Author(s)
      関 行宏
    • Organizer
      応用解析セミナー
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] On type II blow-up mechanisms in a semilinear heat equation with supercritical nonlinearity2019

    • Author(s)
      関 行宏
    • Organizer
      名古屋微分方程式セミナー
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] 球面に値を取る調和写像流方程式における爆発構造について2019

    • Author(s)
      関 行宏
    • Organizer
      第45発展方程式研究会
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] 藤田方程式における臨界指数と解の爆発構造2019

    • Author(s)
      関 行宏
    • Organizer
      南大阪応用数学セミナー
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] On type II blow-up mechanisms in a semilinear heat equation with supercritical nonlinearity2018

    • Author(s)
      関 行宏
    • Organizer
      信州大学偏微分方程式研究集会,
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] Type II blow-up mechanisms in a semilinear heat equation with critical Joseph-Lundgren exponent and harmonic map heat flow2018

    • Author(s)
      関 行宏
    • Organizer
      神戸大学解析セミナー
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] On blow-up mechanisms in harmonic map heat flow2018

    • Author(s)
      関 行宏
    • Organizer
      RIMS 研究集会「反応拡散方程式-伝播現象と特異性の解析および諸科学への応用-」
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] On type II blow-up mechanisms in a semilinear heat equation with supercritical nonlinearity2018

    • Author(s)
      関 行宏
    • Organizer
      応用解析研究会
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] On type II blow-up mechanisms in a semilinear heat equation with supercritical nonlinearity2018

    • Author(s)
      関 行宏
    • Organizer
      微分方程式の総合的研究
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] 球面に値を取る調和写像流方程式の解の爆発について2018

    • Author(s)
      関 行宏
    • Organizer
      京都大学NLPDE セミナー
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] On blow-up mechanisms in harmonic map heat flow2018

    • Author(s)
      Yukihiro Seki
    • Organizer
      Ito-Workshop on Partial Differential Equations
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] 球面に値を取る調和写像流方程式の解の爆発について2018

    • Author(s)
      関 行宏
    • Organizer
      なかもず解析セミナー
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] On type II blow-up mechanisms in a semilinear heat equation with super-critical nonlinearity2018

    • Author(s)
      Yukihiro Seki
    • Organizer
      PDE seminar at Wuhan institute of Physics and Mathematics
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] Construction of refined type II blow-up solutions of the Fujita equation and its applications2018

    • Author(s)
      Yukihiro Seki
    • Organizer
      8th Euro-Japanese Workshop on Blow-up
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K03373
  • [Presentation] On type II blow-up mechanisms in the semilinear heat equation with critical Joseph-Lundgren exponent,2016

    • Author(s)
      関 行宏
    • Organizer
      北陸応用数理研究会2016
    • Place of Presentation
      金沢大学サテライト・プラザ
    • Year and Date
      2016-02-18
    • Invited
    • Data Source
      KAKENHI-PROJECT-26887027
  • [Presentation] On type II blow-up mechanisms in the semilinear heat equation with critical Joseph-Lundgren exponent2016

    • Author(s)
      関 行宏
    • Organizer
      応用数学に関する勉強会(応用数学セミナー)
    • Place of Presentation
      芝浦工業大学
    • Year and Date
      2016-05-25
    • Data Source
      KAKENHI-PROJECT-26887027
  • [Presentation] On type II blow-up mechanisms in the semilinear heat equation with critical Joseph-Lundgren exponent2015

    • Author(s)
      関 行宏
    • Organizer
      非線形解析セミナー
    • Place of Presentation
      慶応義塾大学理工学部
    • Year and Date
      2015-10-30
    • Invited
    • Data Source
      KAKENHI-PROJECT-26887027
  • [Presentation] On type II blow-up mechanisms in the semilinear heat equation with critical Joseph-Lundgren exponent2015

    • Author(s)
      関 行宏
    • Organizer
      京都大学 NLPDE セミナー
    • Place of Presentation
      京都大学理学部
    • Year and Date
      2015-01-23
    • Invited
    • Data Source
      KAKENHI-PROJECT-26887027
  • [Presentation] Description of singularity mechanisms in nonlinear parabolic equations2015

    • Author(s)
      Yukihiro Seki
    • Organizer
      多階層解析と幾何解析の夏の学校
    • Place of Presentation
      北海道大学理学部
    • Year and Date
      2015-07-27
    • Invited
    • Data Source
      KAKENHI-PROJECT-26887027
  • [Presentation] On type II blow-up mechanisms in the Fujita equation2014

    • Author(s)
      関 行宏
    • Organizer
      釧路偏微分方程式研究集会
    • Place of Presentation
      北海道教育大学釧路校
    • Year and Date
      2014-10-12
    • Invited
    • Data Source
      KAKENHI-PROJECT-26887027
  • [Presentation] On type II blow-up mechanisms in the semilear heat equation with critical Joseph-Lundgren exponent2014

    • Author(s)
      Yukihiro Seki
    • Organizer
      岡山偏微分方程式小研究集会
    • Place of Presentation
      岡山大学理学部
    • Year and Date
      2014-12-01
    • Invited
    • Data Source
      KAKENHI-PROJECT-26887027
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