Kazuyuki Yagasaki

Profile Information

Affiliation: Kyoto University

Degree: 工学博士(東京工業大学)

ORCID ID: https://orcid.org/0000-0001-9901-248X
J-GLOBAL ID: 200901096552399264
researchmap Member ID: 5000053597

External link

Research Interests

Research Areas

Research History

Apr, 2014

Professor, Graduate School of Infirmatics, Kyoto University
Oct, 2012 - Mar, 2014

Professor, Graduate School of Science, Hiroshima University
Apr, 2009 - Sep, 2012

Professor, Niigata University
Aug, 2006 - Mar, 2009

Professor, Gifu University
Jul, 1994 - Jul, 2006

Associate Professor, Gifu University
Apr, 1994 - Jun, 1994

Associate Professor, Tamagawa University
Apr, 1988 - Mar, 1994

Lecturer, Tamagawa University
Apr, 1987 - Mar, 1988

Research Associate, Tamagawa University

Education

Apr, 1982 - Mar, 1987

Graduate School of Science and Engineering, Tokyo Institute of Technology
Apr, 1978 - Mar, 1982

Faculty of Engineering, Tokyo Institute of Technology

Papers

107

Nonintegrability of dissipative planar systems

Kazuyuki Yagasaki

Physica D: Nonlinear Phenomena, May, 2024 Peer-reviewed
Non-integrability of the restricted three-body problem

KAZUYUKI YAGASAKI

Ergodic Theory and Dynamical Systems, Mar 6, 2024 Peer-reviewed
Optimal control of the SEIR epidemic model using a dynamical systems approach

Yoshiki Takeguchi, Kazuyuki Yagasaki

Japan Journal of Industrial and Applied Mathematics, Jan, 2024 Peer-reviewed
Nonintegrability of truncated Poincaré-Dulac normal forms of resonance degree two

Kazuyuki Yagasaki

Journal of Differential Equations, Nov, 2023 Peer-reviewed
Nonintegrability of the SEIR epidemic model

Kazuyuki Yagasaki

Physica D: Nonlinear Phenomena, Nov, 2023 Peer-reviewed
Bifurcations and spectral stability of solitary waves in coupled nonlinear Schrödinger equations

Kazuyuki Yagasaki, Shotaro Yamazoe

Journal of Differential Equations, 39(1) 257-281, Nov, 2023 Peer-reviewed
Periodic Perturbations of Codimension-Two Bifurcations with a Double Zero Eigenvalue in Symmetrical Dynamical Systems

Kazuyuki Yagasaki

International Journal of Bifurcation and Chaos, Sep 30, 2023 Peer-reviewed
Continuum Limits of Coupled Oscillator Networks Depending on Multiple Sparse Graphs

Ryosuke Ihara, Kazuyuki Yagasaki

Journal of Nonlinear Science, Aug, 2023 Peer-reviewed
Analytic and Algebraic Conditions for Bifurcations of Homoclinic Orbits II: Reversible Systems

Kazuyuki Yagasaki

Journal of Dynamics and Differential Equations, Jun, 2023 Peer-reviewed
Nonintegrability of forced nonlinear oscillators

Shoya Motonaga, Kazuyuki Yagasaki

Japan Journal of Industrial and Applied Mathematics, May 25, 2023 Peer-reviewed
Integrability of the Zakharov-Shabat Systems by Quadrature

Kazuyuki Yagasaki

Communications in Mathematical Physics, May, 2023 Peer-reviewed
Obstructions to Integrability of Nearly Integrable Dynamical Systems Near Regular Level Sets

Shoya Motonaga, Kazuyuki Yagasaki

Archive for Rational Mechanics and Analysis, 247(3), Apr 24, 2023 Peer-reviewed
Nonintegrability of Dynamical Systems Near Degenerate Equilibria

Kazuyuki Yagasaki

Communications in Mathematical Physics, Mar, 2023 Peer-reviewed
Nonintegrability of Nearly Integrable Dynamical Systems Near Resonant Periodic Orbits

Kazuyuki Yagasaki

Journal of Nonlinear Science, 32(4), Aug, 2022 Peer-reviewed
Existence of finite time blow-up solutions in a normal form of the subcritical Hopf bifurcation with time-delayed feedback for small initial functions

Kazuyuki Yagasaki

Discrete and Continuous Dynamical Systems - B, 27(5) 2621-2621, 2022 Peer-reviewed
Optimal control of the SIR epidemic model based on dynamical systems theory

Kazuyuki Yagasaki

Discrete and Continuous Dynamical Systems - B, 27(5) 2501-2501, 2022 Peer-reviewed
Persistence of periodic and homoclinic orbits, first integrals and commutative vector fields in dynamical systems

Shoya Motonaga, Kazuyuki Yagasaki

Nonlinearity, 34(11) 7574-7608, Nov 1, 2021 Peer-reviewed
Numerical analyses for spectral stability of solitary waves near bifurcation points

Kazuyuki Yagasaki, Shotaro Yamazoe

Japan Journal of Industrial and Applied Mathematics, 38(1) 125-140, Feb 10, 2021 Peer-reviewed
Chebyshev spectral methods for computing center manifolds

Takeshi Saito, Kazuyuki Yagasaki

Journal of Computational Dynamics, 8(2) 165-165, 2021 Peer-reviewed
Bifurcations of radially symmetric solutions in a coupled elliptic system with critical growth in Rd for d = 3,4

Kazuyuki Yagasaki, Tomasz Stachowiak

Journal of Mathematical Analysis and Applications, 484(2) 123726-123726, Apr, 2020 Peer-reviewed

Misc.

Bifurcations of homoclinic orbits in reversible systems

Kazuyuki Yagasaki

RIMS Kokyuroku, 2149 95-101, May, 2020 Invited
Nonintegrability and Chaos in Hamiltonian Systems with Saddle-Centers

Kazuyuki Yagasaki

RIMS Kokyuroku, 2137 183-200, Dec, 2019 Invited
Chaos in randomly perturbed dynamical systems

YAGASAKI Kazuyuki

RIMS Kokyuroku, 1942 98-104, Apr, 2015
Analytic and algebraic conditions for bifurcations of homoclinic orbits in reversible systems

Kazuyuki Yagasaki

Nonlinear Dynamics in Partial Differential Equations, 2015
不規則摂動系におけるカオス現象 (偏微分方程式の背後にある確率過程と解の族が示す統計力学的な現象の解析)

矢ヶ崎一幸

数理解析研究所講究録, 1919 61-68, Sep, 2014
Bifurcation diagram for interior single-peak solutions in a Neumann problem for $u''+\lambda(-u + u^p)=0$ with $p\in\mathbb{R}$ and $p>1$ (Progress in Qualitative Theory of Ordinary Differential Equations)

Yagasaki Kazuyuki

RIMS Kokyuroku, 1901 116-120, Jun, 2014
非対称コマにおける馬蹄力学の存在 (力学系 : 理論から応用へ、応用から理論へ)

矢ヶ崎一幸

数理解析研究所講究録, 1742 96-104, May, 2011
Application of the Subharmonic Melnikov Method to Piecewise-Linear Systems

YAGASAKI Kazuyuki

Dynamics & Design Conference, 2010 "239-1"-"239-5", Sep, 2010
Dynamical Systems Approach to Hamilton-Jacobi Equations for Nonlinear Control Systems

YAGASAKI Kazuyuki

Dynamics & Design Conference, 2010 "252-1"-"252-2", Sep, 2010
二等辺三体問題の三体衝突間のヘテロクリニック軌道と相対周期軌道 (幾何学的力学系理論とその周辺)

柴山允瑠, 矢ヶ崎一幸

数理解析研究所講究録, 1692 39-45, Jun, 2010
可逆系における1パラメータ周期軌道族の分岐 (双曲型力学系から大自由度力学系へ)

矢ヶ崎一幸

数理解析研究所講究録, 1688 20-25, May, 2010
Gray-Scottモデルにおける定常パルス解の不安定多様体に対する数値解析 (非線形波動現象の数理と応用)

矢ヶ崎一幸

数理解析研究所講究録, 1645 108-113, Apr, 2009
Dynamical Systems Approach to Hamilton-Jacobi Equations for Nonlinear Control Systems

YAGASAKI Kazuyuki

Dynamics & Design Conference, 2008 "147-1"-"147-4", Sep, 2008
Present and Future of Nonlinear Dynamics According to a Nonlinear Dynamicist

YAGASAKI KAZUYUKI

J Syst Des Dyn (Web), 2(3) 652-663 (J-STAGE)-663, 2008
Global Perturbation Method for Hamilton-Jacobi Equations of Nonlinear Control Systems

YAGASAKI Kazuyuki, SAKAMOTO Noboru, HIRATA Yoshihiro

IEICE technical report. Nonlinear problems, 107(399) 17-21, Dec, 2007
Extension of a chaos control method to hyperbolic unstable trajectories defined on infinite- or finite-time intervals

YAGASAKI Kazuyuki

Dynamics & Design Conference, 2007 "519-1"-"519-4", Sep, 2007
Chaos in the N-vortex problem on sphere

Sakajo Takashi, Yagasaki Kazuyuki

Proceedings, ... meeting of Japan Society of Fluid Mechanics, 2007 298-298, Aug, 2007
Perturbation Approach for Hamilton-Jacobi Equations of Nonlinear Control Systems : II. When all directions near equilibria are unstable

HIRATA Yoshihiro, YAGASAKI Kazuyuki, SAKAMOTO Noboru

Dynamics and Design Conference, 2007(10) 434-437, Aug, 2007
Perturbation Approach for Hamilton-Jacobi Equations of Nonlinear Control Systems : I. When stable directions near equilibria exist

YAGASAKI Kazuyuki, HIRATA Yoshihiro, SAKAMOTO Noboru

Dynamics and Design Conference, 2007(10) 430-433, Aug, 2007
Heteroclinic Jumps for Whiskered Tori in Nearly Integrable Hamiltonian Systems(Recent Developments in Dynamical Systems)

Yagasaki Kazuyuki

RIMS Kokyuroku, 1552 157-163, May, 2007

Books and Other Publications

集合と位相

矢ヶ崎一幸

学術図書出版社, Mar, 2020 (ISBN: 9784780608229)
微分方程式の基礎と解法

矢ヶ崎一幸

学術図書出版社, Sep, 2014 (ISBN: 9784780604207)
非線形系のダイナミクス : 非線形現象の解析入門

日本機械学会 (Role: Contributor)

コロナ社, Aug, 2007 (ISBN: 9784339044928)
Nonlinear dynamics : new theoretical and applied results

Awrejcewicz, J. (Jan) (Role: Contributor, Part I, Chapter 7)

Akademie Verlag, 1995 (ISBN: 3055016424)
例題で学ぶ振動工学

鈴木浩平 (Role: Contributor, 第6章)

丸善, Mar, 1994 (ISBN: 4621039393)
ポイントを学ぶ振動工学

鈴木浩平 (Role: Contributor, 第7章)

丸善, Mar, 1993 (ISBN: 4621038117)

Presentations

Nonintegrability of the Restricted Three-Body Problem

Kazuyuki Yagasaki

The 8th Workshop on Hamiltonian Systems and Related Topics, Aug 29, 2023
Singular Solitary Waves in the KdV Equation

Kazuyuki Yagasaki

10th International Congress on Industrial and Applied Mathematics, Aug 22, 2023
Melnikov’s Methods and Nonintegrability of Forced Nonlinear Oscillators

Kazuyuki Yagasaki

UTAM Symposium on Nonlinear dynamics for design of mechanical systems across diﬀerent length/time scales, Aug 4, 2023 Invited
Nonintegrability of the Restricted Three-Body Problem

Kazuyuki Yagasaki

2023 NCTS Workshop on Dynamical Systems, Jun 9, 2023 Invited
力学系理論の手法による感染症数理モデル SEIR 系の最適制御

竹口佳輝, 矢ヶ崎一幸

日本数学会2023年度年会, Mar 18, 2023
力学系に関連した 3つの話題における最近の研究結果: KdV 方程式の特異ソリトン, Poincare‑Dulac標準形の非可積分性, 余次元2の分岐の周期的摂動

矢ヶ崎一幸

2022年度冬の力学系研究集会, Jan 7, 2023
Some recent results on nonintegrability of dynamical systems

Sep 15, 2022
Nonintegrability of three and four‑dimensional dynamical systems near degenerate equilibria

Sep 15, 2022
Integrability of the two‑dimensional Zakharov‑Shabat systems by quadrature

Sep 13, 2022
Three Topics on Nonintegrability of Dynamical Systems

Kazuyuki Yagasaki

Sep 10, 2022
Three Topics on Nonintegrability of Dynamical Systems

Jul 9, 2022
Some recent results on nonintegrability of dynamical systems

Mar 15, 2022 Invited
力学系の非可積分性に関する最近の研究結果について

矢ヶ崎一幸

2021年度冬の力学系研究集会, Jan 9, 2022
Integrability of the Zakharov‑Shabat systems by quadrature: An application of differential Galois theory to integrable nonlinear PDEs

Sep 8, 2021
近可積分系に対する正則レベル集合近傍における非可積分性のための十分条件

本永翔也, 矢ヶ崎一幸

日本応用数理学会2021年度年会, Sep 7, 2021
力学系の可積分性に関する最近の研究結果について

矢ヶ崎一幸

日本応用数理学会2021年度年会, Sep 7, 2021
Integrability of the Zakharov‑Shabat systems by quadrature: An application of differential Galois theory to integrable nonlinear PDEs

RIMS Workshop: Recent Developments in Dynamical Systems and their Application, Jul 24, 2021
Optimal control of the SIR epidemic model

Kazuyuki Yagasaki

Sep 16, 2020
Chebyshev spectral methods for computing center manifolds

Kazuyuki Yagasaki

Sep 16, 2020
Existence of unbounded solutions in a normal form of the subcritical Hopf bifurcation with time-delayedfeedback for small initial functions

Kazuyuki Yagasaki

Sep 15, 2020

Professional Memberships

Research Projects

Development of innovative theories on integrability of dynamical systems and their applications

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2022 - Mar, 2026
New Developments of Dynamical Systems Theory for Diverse Mathematical Models

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2017 - Mar, 2022
Perturbation problems for degenerate integrable systems and mathematics for resonance phenomena

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, Apr, 2013 - Mar, 2017

Ito HIdekazu, YAGASAKI Kazuyuki
Investigation of Diverse Bifurcation Structures in Differential Dynamical Systems

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, Apr, 2013 - Mar, 2017

Yagasaki Kazuyuki
Normal forms for superintegrable systems at singular points and their perturbation problems

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, Apr, 2010 - Mar, 2013

ITO Hidekazu, YAGASAKI Kazuyuki, SHIBAYAMA Mitsuru
Bifurcations and Homo- and Heteroclinic Behavior in Infinite- Dimensional Dynamical Systems

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, 2009 - 2012

YAGASAKI Kazuyuki, ITO Hidekazu, SHIBAYAMA Mitsuru
可積分保存系における剛性の研究

科学研究費助成事業, 萌芽研究, 日本学術振興会, 2006 - 2008

伊藤秀一, 吉野正史, 矢ケ崎一幸
A Fundamental Study on Dynamics and Control of Complex Systems

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, 1998 - 2000

YAGASAKI Kazuyuki
ロボットアームのカオス制御に関する研究

科学研究費助成事業, 奨励研究(A), 日本学術振興会, 1996 - 1996

矢ケ崎一幸

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Education

Papers

Misc.

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