FUJIWARA Kazumasa

フジワラカズマサ | FUJIWARA Kazumasa

Affiliation and department：
Job title： Associate Professor
Homepage URL (2)： https://fujiwara-kazumasa.math.ryukoku.ac.jp/home_j.html , https://fujiwara-kazumasa.math.ryukoku.ac.jp/

Research field (1)： Mathematical analysis

Research keywords (5)： Damped wave equation , Schrodinger equation , Fractional Calculus , Blowup , PDE

Research theme for competitive and other funds (6)：

2024 - 2029 波動場の臨界相互作用の解析
2024 - 2029 半線型消散型波動方程式の解の存在最大時刻の解明
2020 - 2023 Study on blowup phenomena for Shcr\"odinger equations with non-gauge invariant power type nonlinearities
2019 - 2022 Study on the blowup phenomena for partial differential equations with non-gage invariant powertype nonlinearity
2016 - 2018 Mathematical basis of semirelativistic field

Show all

Papers (31)：

Kazumasa Fujiwara, Vladimir Georgiev. A new class of small initial data which may shift the critical power and lifespan estimates for the classical damped wave equations. Evolution Equations and Control Theory. 2023. 12. 4. 1122-1132
Kazumasa Fujiwara. Note on the lifespan estimate of solutions for non-gauge invariant semilinear massless semirelativistic equations with some scaling critical nonlinearity. Journal of Evolution Equations. 2022. 23. 1
Kazumasa Fujiwara. Lifespan estimates of 1D non-gauge invariant semilinear semirelativistic equations. Applied Mathematics Letters. 2022. 124. 107619-107619
Kazumasa Fujiwara, Masahiro Ikeda, Yuta Wakasugi. On the Cauchy problem for a class of semilinear second order evolution equations with fractional Laplacian and damping. Nonlinear Differential Equations and Applications NoDEA. 2021. 28. 6
Kazumasa Fujiwara, Vladimir Georgiev. On global existence of L2 solutions for 1D periodic NLS with quadratic nonlinearity. Journal of Mathematical Physics. 2021. 62. 9. 091504-091504

ｍore...

Lectures and oral presentations (55)：

Lifespan estimate for classical damped wave equations with some initial data
(Kyoto University NLPDE Seminar 2024)
Lifespan estimate for classical damped wave equations with some initial data
(2023)
Lifespan estimate for classical damped wave equations with some initial data
(ICIAM 2023 2023)
A lifespan estimate for semilinear classical damped wave equations
(2023)
A lifespan estimate for semilinear classical damped wave equations
(Geometric Analysis in Harmonic Analysis and PDE 2023)

ｍore...

Education (3)：

2014 - 2017 Waseda University School of Advaned Science and Engineering Doctor Corse, Department of Pure and Applied Physics
2012 - 2014 Waseda Univeristy School of Advanced Science and Engineering Department of Pure and Applied Physics
2008 - 2012 Waseda University School of Advanced Science and Engineering Department of Applied Physics

Professional career (1)：

Work history (9)：

2023/04 - 現在 Ryukoku University Faculty of Advanced Science and Technology Course of Applied Mathematics and Informatics Associate Professor
2020/10 - 2023/03 Nagoya University Graduate School of Mathematics Assistant Professor
2019/04 - 2020/09 Japan Society for the Promotion of Science JSPS Superlative Postdoctoral Fellow: SPD
2017/10 - 2019/03 Scuola Normale Superiore di Pisa Centro di Ricerca Matematica Ennio De Giorgi Junior Visiting Position
2017/04 - 2017/09 Chuo University Part-time Lecturer

Show all

Committee career (1)：

Awards (3)：

2022/09 - The Mathematical Society of Japan The MSJ Takebe Katahiro Prizes Harmonic analytical research on nonlinear dispersive equations
2016/03 - Japan Society for the Promotion of Science 6th Ikushi Prize Mathematical basis of semirelativistic field
2014/03 - Waseda University Koizumi Prize (Master thesis award of Department of Pure and Applied Physics) On time-global existence for semirelativistic systems

Association Membership(s) (2)：

The International Society for Analysis, its Applications and Computation (ISAAC) , THE MATHEMATICAL SOCIETY OF JAPAN

※ Researcher’s information displayed in J-GLOBAL is based on the information registered in researchmap. For details, see here.

Return to Previous Page