Nishiguchi Junya 西口純矢

… Alternative Names

NISHIGUCHI Junya 西口純矢

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Researcher Number	60813392
Other IDs
Affiliation (Current)	2026: 摂南大学, 理工学部, 准教授
Affiliation (based on the past Project Information) *help	2019 – 2024: 東北大学, 材料科学高等研究所, 助教
Review Section/Research Field	Principal Investigator Basic Section 12020:Mathematical analysis-related
Keywords	Principal Investigator 定数変化法公式 / 無限次元力学系 / 遅れ型関数微分方程式 / 遅延微分方程式 / オメガ極限集合 / 位相空間 / 多価力学系 / 局所半流れ / 正則性 / Banach 空間 … More / 軟解 / アトラクタ / 時間遅れ構造の抽出 / パラメータを持つ不動点問題 / ソボレフ空間 / 時間遅れパラメータに関する解の滑らか依存性 / 大域アトラクタ / 位相力学系 / コンパクト性 / 時間遅れネットワーク / 線型化安定性の原理 / 極限集合 / 特性方程式 Less

Research Projects
(2 results)
Research Products
(50 results)

遅延微分方程式の力学系理論の基礎整備と応用探索Principal Investigator
- Principal Investigator
  
  西口純矢
- Project Period (FY)
  2023 – 2026
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 12020:Mathematical analysis-related
- Research Institution
  Tohoku University
Inherent time-delay structure and its extraction: Development and evolution of dynamics research using time-delay structurePrincipal Investigator
- Principal Investigator
  
  NISHIGUCHI Junya
- Project Period (FY)
  2019 – 2023
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 12020:Mathematical analysis-related
- Research Institution
  Tohoku University

All 2025 2024 2023 2022 2021 2020 2019

All Journal Article Presentation

[Journal Article] Mild solutions, variation of constants formula, and linearized stability for delay differential equations2023
- Author(s)
  Junya Nishiguchi
- Journal Title
  
  Electronic Journal of Qualitative Theory of Differential Equations
  
  Volume: 32 Issue: 32 Pages: 1-77
- DOI
  10.14232/ejqtde.2023.1.32
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K14565
[Journal Article] Asymptotic compactness in topological spaces2021
- Author(s)
  Junya Nishiguchi
- Journal Title
  
  Topology and its Applications
  
  Volume: 287 Pages: 107451-107451
- DOI
  10.1016/j.topol.2020.107451
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K14565, KAKENHI-ORGANIZER-17H06460
[Journal Article] $C^1$-smooth dependence on initial conditions and delay: spaces of initial histories of Sobolev type, and differentiability of translation in $L^p$2019
- Author(s)
  Junya Nishiguchi
- Journal Title
  
  Electronic Journal of Qualitative Theory of Differential Equations
  
  Volume: 91 Issue: 91 Pages: 1-32
- DOI
  10.14232/ejqtde.2019.1.91
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K14565, KAKENHI-ORGANIZER-17H06460
[Presentation] Mild solutions for retarded systems in Banach spaces2025
- Author(s)
  Junya Nishiguchi
- Organizer
  The 42th Kyushu Symposium on Partial Differential Equations
- Invited
- Data Source
  KAKENHI-PROJECT-23K12994
[Presentation] On $M^p$-theory of autonomous linear retarded systems in Banach spaces2025
- Author(s)
  西口純矢
- Organizer
  非線形解析セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-23K12994
[Presentation] 遅延系のダイナミクスと発展方程式表現2024
- Author(s)
  西口純矢
- Organizer
  日本応用数理学会 2024 年度年会正会員主催 OS「応用力学系」
- Data Source
  KAKENHI-PROJECT-23K12994
[Presentation] Dynamical systems with multivalued motions: maximal time of existence and omega-limit sets2024
- Author(s)
  西口純矢
- Organizer
  葉層構造の幾何学とその応用
- Invited
- Data Source
  KAKENHI-PROJECT-23K12994
[Presentation] 線型遅延微分方程式の「軟解」概念について2024
- Author(s)
  西口純矢
- Organizer
  2024年度日本数学会年会函数方程式論分科会
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] On regularity of mild solutions for linear delay differential equations2024
- Author(s)
  Junya Nishiguchi
- Organizer
  Equadiff 2024
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K12994
[Presentation] 線型遅延微分方程式の軟解の正則性について2024
- Author(s)
  西口純矢
- Organizer
  2024 年度秋季総合分科会函数方程式論分科会
- Data Source
  KAKENHI-PROJECT-23K12994
[Presentation] Mild solutions for retarded systems2024
- Author(s)
  Junya Nishiguchi
- Organizer
  RIMS Symposium (Open) “Superstruct of a qualitative theory of ODEs and exploration of its versatility”
- Invited
- Data Source
  KAKENHI-PROJECT-23K12994
[Presentation] Dynamical systems with multivalued motions: maximal time of existence and omega-limit sets2024
- Author(s)
  西口純矢
- Organizer
  京都力学系セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-23K12994
[Presentation] さまざまな遅延微分方程式の解の振る舞い2024
- Author(s)
  西口純矢
- Organizer
  QUALITDDE-2024
- Invited
- Data Source
  KAKENHI-PROJECT-23K12994
[Presentation] 遅延系と遅延力学系2024
- Author(s)
  西口純矢
- Organizer
  第7回京都応用力学系セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-23K12994
[Presentation] 線型遅延微分方程式の解の基本系と基本行列解2024
- Author(s)
  西口純矢
- Organizer
  2024 年度日本数学会年会函数方程式論分科会
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] On a theory of “mild solutions” and its application to the linearized stability for delay differential equations2024
- Author(s)
  西口純矢
- Organizer
  第113回金沢解析セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 遅延系のダイナミクスの理論のさらなる発展に向けて2024
- Author(s)
  西口純矢
- Organizer
  第16回岡山応用数学セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-23K12994
[Presentation] "Mild solutions" and variation of constants formula for delay differential equations2023
- Author(s)
  Junya Nishiguchi
- Organizer
  12th Colloquium on the Qualitative Theory of Differential Equations
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 不連続な履歴関数により生じる遅延微分方程式の困難さの解消について2023
- Author(s)
  西口純矢
- Organizer
  九州力学系セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] “Mild solutions” and variation of constants formula for delay differential equations2023
- Author(s)
  Junya Nishiguchi
- Organizer
  The 4th International Conference on Dynamics of Differential Equations -- in Memory of Jack K.
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] Variation of constants formula for delay differential equations: revisited2023
- Author(s)
  Junya Nishiguchi
- Organizer
  13th Americas Conference on Diff. Equations and Nonlinear Analysis and ICMC Summer Meeting on Differential Equations - 2023 Chapter
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 遅延微分方程式に対する「軟解」概念と定数変化法公式2023
- Author(s)
  西口純矢
- Organizer
  第７回時間遅れと数理セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] ”Mild solutions” and variation of constants formula for delay differential equations2023
- Author(s)
  西口純矢
- Organizer
  東北大学応用数理解析セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 遅延微分方程式と定数変化法公式2023
- Author(s)
  西口純矢
- Organizer
  お茶の水女子大学微分方程式セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] “Mild solutions” for hereditary linear differential systems2023
- Author(s)
  Junya Nishiguchi
- Organizer
  10th International Congress on Industrial and Applied Mathematics
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 線型遅延微分方程式の「軟解」概念について2023
- Author(s)
  西口純矢
- Organizer
  2023年度応用数学合同研究集会
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 遅延微分方程式はいかなる意味で「発展方程式」であるか？2023
- Author(s)
  西口純矢
- Organizer
  ２０２３軽井沢グラフと解析研究集会
- Invited
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 遅延微分方程式のダイナミクス研究の展望2023
- Author(s)
  西口純矢
- Organizer
  時間遅れ系に関する研究集会
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 線型遅延微分方程式の「軟解」概念について2023
- Author(s)
  西口純矢
- Organizer
  第7回 ODE若手セミナー
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 時間遅れがもたらす無限次元性と超越性2022
- Author(s)
  西口純矢
- Organizer
  2022 年度秋季総合分科会応用数学分科会特別講演
- Invited
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 遅延微分方程式と定数変化法公式2022
- Author(s)
  西口純矢
- Organizer
  2022 年度日本応用数理学会年会正会員主催 OS「時間遅れと数理」
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] Critical delay and stability for linear delay differential equations2022
- Author(s)
  Junya Nishiguchi
- Organizer
  Equadiff 15
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 平面上のある微分遅れ系の線型安定性のための臨界遅れの導出2021
- Author(s)
  西口純矢
- Organizer
  日本応用数理学会2021年度年会正会員OS「時間遅れと数理」
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] Threshold condition of real part of Lambert W function and its application to a planar differential delay system2021
- Author(s)
  西口純矢
- Organizer
  2021年度 RIMS 共同研究（公開型）「力学系理論の最近の進展とその応用」
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 時間遅れ系と数理科学：新たな展開に向けて2021
- Author(s)
  西口純矢
- Organizer
  2021年度 RIMS共同研究（公開型）時間遅れ系と数理科学：理論と応用の新たな展開に向けて
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 時間遅れ系への入門に向けて2021
- Author(s)
  西口純矢
- Organizer
  第42回発展方程式若手セミナー特別セッション「時間遅れへの誘い」
- Invited
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 漸近的な意味でのコンパクト性の概念について2021
- Author(s)
  西口純矢
- Organizer
  2020年度冬の力学系研究集会
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 自然な距離を持たない相空間における力学系の大域アトラクタについて2020
- Author(s)
  西口純矢
- Organizer
  日本応用数理学会 2020年度年会正会員主催OS「応用力学系」
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] Time-delay and infinite-dimensional dynamical systems2020
- Author(s)
  西口純矢
- Organizer
  新学術領域「次世代物質探索のための離散幾何学」 2020 年度第 1 回領域会議
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] $C^1$-smooth dependence on initial conditions and delay: spaces of initial histories of Sobolev type, and differentiability of translation in $L^p$2020
- Author(s)
  Junya Nishiguchi
- Organizer
  ICMC Summer Meeting on Differential Equations -- 2020 Chapter
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 位相空間における漸近的な意味でのコンパクト性2020
- Author(s)
  西口純矢
- Organizer
  2020年度応用数学合同研究集会
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] Smooth dependence on history and delay: its connection with composition operators and temporal order of reaction2019
- Author(s)
  西口純矢
- Organizer
  力学系 -新たな理論と応用に向けて-
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 分岐パラメータとしての時間遅れ2019
- Author(s)
  西口純矢
- Organizer
  第１回時間遅れが誘導する現象と数理
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 時間遅れ滑らか依存性：時間遅れがもたらす平滑化効果と反応の時間的順序2019
- Author(s)
  西口純矢
- Organizer
  日本応用数理学会2019年度年会正会員主催OS応用力学系
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] $C^1$-smooth dependence with respect to history in Sobolev space $W^{1,1}$ and constant delay: beyond Lipschitz continuous histories2019
- Author(s)
  Junya Nishiguchi
- Organizer
  11th Colloquium of the Qualitative Theory of Differential Equations
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 遅延微分方程式と履歴空間：さらなる力学系的考察に向けて2019
- Author(s)
  西口純矢
- Organizer
  Advancing Interaction among mathematical concepts and methods towards PrActical problems 2019
- Invited
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] $C^1$-smooth dependence with respect to history in Sobolev space $W^{1, 1}$ and constant delay: beyond Lipschitz continuous histories2019
- Author(s)
  Junya Nishiguchi
- Organizer
  The 1st Hungary-Japan Workshop on Delay Equations and Mathematical Epidemiology
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] ある不連続な関数微分方程式と $L^p$ 空間における合成作用素の滑らかさとの関係2019
- Author(s)
  西口純矢
- Organizer
  日本数学会2019年度秋季総合分科会函数方程式論分科会
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] 履歴の延長と正則性に基づく関数微分方程式の理論について2019
- Author(s)
  西口純矢
- Organizer
  微分方程式の総合的研究
- Invited
- Data Source
  KAKENHI-PROJECT-19K14565
[Presentation] Smooth dependence with respect to delay: temporal order of reaction2019
- Author(s)
  Junya Nishiguchi
- Organizer
  MRM2019
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K14565

Nishiguchi Junya 西口 純矢

NISHIGUCHI Junya 西口 純矢

Research Projects

Research Products

遅延微分方程式の力学系理論の基礎整備と応用探索Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Inherent time-delay structure and its extraction: Development and evolution of dynamics research using time-delay structurePrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

[Journal Article] Mild solutions, variation of constants formula, and linearized stability for delay differential equations2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Asymptotic compactness in topological spaces2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] $C^1$-smooth dependence on initial conditions and delay: spaces of initial histories of Sobolev type, and differentiability of translation in $L^p$2019

Author(s)

Journal Title

DOI

Data Source

[Presentation] Mild solutions for retarded systems in Banach spaces2025

Author(s)

Organizer

Data Source

[Presentation] On $M^p$-theory of autonomous linear retarded systems in Banach spaces2025

Author(s)

Organizer

Data Source

[Presentation] 遅延系のダイナミクスと発展方程式表現2024

Author(s)

Organizer

Data Source

[Presentation] Dynamical systems with multivalued motions: maximal time of existence and omega-limit sets2024

Author(s)

Organizer

Data Source

[Presentation] 線型遅延微分方程式の「軟解」概念について2024

Author(s)

Organizer

Data Source

[Presentation] On regularity of mild solutions for linear delay differential equations2024

Author(s)

Organizer

Data Source

[Presentation] 線型遅延微分方程式の軟解の正則性について2024

Author(s)

Organizer

Data Source

[Presentation] Mild solutions for retarded systems2024

Author(s)

Organizer

Data Source

[Presentation] Dynamical systems with multivalued motions: maximal time of existence and omega-limit sets2024

Author(s)

Organizer

Data Source

[Presentation] さまざまな遅延微分方程式の解の振る舞い2024

Author(s)

Organizer

Data Source

[Presentation] 遅延系と遅延力学系2024

Author(s)

Organizer

Data Source

[Presentation] 線型遅延微分方程式の解の基本系と基本行列解2024

Author(s)

Organizer

Data Source

[Presentation] On a theory of “mild solutions” and its application to the linearized stability for delay differential equations2024

Nishiguchi Junya 西口純矢

NISHIGUCHI Junya 西口純矢