Nishiguchi Junya

Affiliation and department：
Job title： Assistant Professor

Research field (3)： Mathematical analysis , Applied mathematics and statistics , Basic analysis

Research keywords (17)： Functional differential equations , Principle of linearized stability , Variation of constants formula , Lambert W function , General topology , Topological dynamics , Extraction of time-delay structure , Spatially extended systems , Finite speed of propagation , Global attractors , Time-delayed feedback control , Attractors , Dynamical systems , Dynamics , Time-delay systems , Infinite dimensional dynamical systems , Delay differential equations

Research theme for competitive and other funds (3)：

2023 - 2027 遅延微分方程式の力学系理論の基礎整備と応用探索
2019 - 2023 内在する時間遅れ構造とその抽出:時間遅れ構造を用いたダイナミクス研究の展開と発展
2015 - 2017 遅れ型関数微分方程式のダイナミクス:遅延による無限次元構造とカオス

Papers (6)：

Junya Nishiguchi. Mild solutions, variation of constants formula, and linearized stability for delay differential equations. Electronic Journal of Qualitative Theory of Differential Equations. 2023. 32. 1-77
Junya Nishiguchi. Asymptotic compactness in topological spaces. Topology and its Applications. 2021. 287. 107451-107451
Junya Nishiguchi. C1-smooth dependence on initial conditions and delay: spaces of initial histories of Sobolev type, and differentiability of translation in L p. Electronic Journal of Qualitative Theory of Differential Equations. 2019. 91. 1-32
Junya Nishiguchi. A necessary and sufficient condition for well-posedness of initial value problems of retarded functional differential equations. JOURNAL OF DIFFERENTIAL EQUATIONS. 2017. 263. 6. 3491-3532
Junya Nishiguchi. Retarded functional differential equations with general delay structure. Kyoto University. 2017

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MISC (14)：

Junya Nishiguchi. Time-delay systems and delay differential equations. 2022
Junya Nishiguchi. Transcendency and infinite-dimensionality brought by time-delay. 2022. 2023. 13-29
Junya Nishiguchi. Stability region and critical delay. arXiv. 2021
西口純矢. パラメータとしての時間遅れ. 第3回時間遅れと数理セミナー講演スライド. 2021
西口純矢. 位相空間における漸近的な意味でのコンパクト性. 2020年度応用数学合同研究集会予稿集著者原稿. 2020

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Lectures and oral presentations (95)：

線型遅延微分方程式の解の基本系と基本行列解
(2024 年度日本数学会年会函数方程式論分科会 2024)
線型遅延微分方程式の「軟解」概念について
(2024年度日本数学会年会函数方程式論分科会 2024)
Dynamical systems with multivalued motions: maximal time of existence and omega-limit sets
(京都力学系セミナー 2024)
On a theory of “mild solutions” and its application to the linearized stability for delay differential equations
(2024)
線型遅延微分方程式の「軟解」概念について
(2023年度応用数学合同研究集会 2023)

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Education (3)：

2014 - 2017 京都大学大学院理学研究科数学数理解析専攻数学系分野博士後期課程
2012 - 2014 京都大学大学院理学研究科数学数理解析専攻数学系分野修士課程
2007 - 2012 Kyoto University Faculty of Science Faculty of Science

Professional career (1)：

Doctor of Science (Kyoto University)

Work history (9)：

2023/04 - 現在 Tohoku University Mathematical Science Center for Co-creative Society, Assistant Professor
2023/04 - 現在 Tohoku Gakuin University Part-time Lecturer
2020/01 - 現在 Tohoku University Chiba Laboratory, Mathematical Science Group, Advanced Institute for Materials Research/ Center of Mathematical Sciences for Open Innovation Assistant Professor
2019/04 - 2019/12 Tohoku University Kotani Laboratory, Mathematical Science Group, Advanced Institute for Materials Research Assistant Professor
2018/04 - 2019/03 Tohoku University Graduate School of Science Department of Mathematics Assistant Professor

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Committee career (1)：

2022/04 - 現在日本応用数理学会若手の会運営委員

Awards (1)：

2017/03 - The Mathematical Society of Japan The 2016 MSJ Prize for Exellent Applied Mathematicians How should we understand the time-delay structure in dynamics?

Association Membership(s) (2)：

THE JAPAN SOCIETY FOR INDUSTRIAL AND APPLIED MATHEMATICS , The Mathematical Society of Japan

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