Hirosawa Fumihiko

ヒロサワフミヒコ | Hirosawa Fumihiko

Affiliation and department：
Other affiliations (2)：

Yamaguchi University Faculty of Science, Mathematical Sciences Associate Professor
Yamaguchi University Faculty of Science, Mathematical Sciences Associate Professor

Homepage URL (1)： http://ds0n.cc.yamaguchi-u.ac.jp/~hirosawa/indexj.htm

Research field (2)： Mathematical analysis , Basic analysis

Research keywords (1)： Partial Differential Equation

Research theme for competitive and other funds (7)：

2018 - 2023 Wave equations with variable propagation speed and its application for the global solvability of Kirchhoff equation
2014 - 2018 Evolution equations with variable coefficients and their applications to Kirchhoff equation
2010 - 2014 The refined diagonalization procedure and a development on the evolution equations with smooth coefficients
2010 - 2012 Research on oscillation problems for degenerate hyperbolic equations
2008 - 2011 On the study of the lifespan for nonlinear hyperbolic systems

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Papers (33)：

Kazunori Goto, Fumihiko Hirosawa. On the Wave-Like Energy Estimates of Klein-Gordon Type Equations with Time Dependent Potential. Trends in Mathematics. 2023. 635-646
Fumihiko Hirosawa. On the energy estimates of semi-discrete wave equations with time dependent propagation speed. Journal of Mathematical Analysis and Applications. 2021. 496. 1. 124798-124798
Fumihiko Hirosawa. On the Energy Estimate for Klein-Gordon-Type Equations with Time-Dependent Singular Mass. Analysis, Probability, Applications, and Computation. 2019. 325-335
Hirosawa, F, Nascimento W. N. Energy estimates for the Cauchy problem of Klein-Gordon type equation with non-effective and very fast oscillating time-dependent potential. Ann. Mat. Pura Appl. 2018. 197. 3. 817-841
Ebert, M. R, Fitriana, L, Hirosawa. A remark on the energy estimates for wave equations with integrable in time speed of propagation. Trends in Mathematics. Research Perspectives. 2017. 481-488

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Lectures and oral presentations (76)：

Global solvability for semi-discrete Kirchhoff equation
(14th International ISAAC Congress 2023)
On the wave-like energy estimates of Klein-Gordon type equations with time dependent potential
(第38回松山キャンプ 2023)
Kirchhoff 型半離散波動方程式の大域可解性について
(第38回松山キャンプ 2023)
On the wave-like energy estimates of Klein-Gordon type equations with time dependent potential
(駿河台偏微分方程式研究集会 2022)
半離散型キルヒホフ方程式の大域可解性
(駿河台偏微分方程式研究集会 2022)

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Education (3)：

Professional career (2)：

Work history (5)：

2016/04 - 現在 YAMAGUCHI UNIVERSITY Graduate School of Science and Engineering(Science) Professor
2015/04 - 2016/03 YAMAGUCHI UNIVERSITY Graduate School of Science and Engineering(Science)
2007/10 - 2015/03 YAMAGUCHI UNIVERSITY Graduate School of Science and Engineering(Science) Associate Professor
2003/04 - 2007/09 Nippon Institute of Technology Department of Engineering Lecturer
2000/04 - 2003/03 University of Tsukuba Department of Engineering Research Associate

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