2009 - 2019 Representation of solutions to Schroedinger equations in terms of wave packet transform and its application
2002 - 2009 半線形波動方程式の特異性伝播
2002 - 2009 Propagation of singularities for semilinear wave equations
論文 (42件):
Keiichi Kato and Ryo Muramatsu. Estimates on modulation spaces for Schrödinger operators with time-dependent sub-linear vector potentials. Hokkaido Mathematical Journal. 2024. 53. 1. 51-69
Shingo Ito and Keiichi Kato. Wave front set of solutions to Schrödinger equations with perturbed harmonic oscillators. JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS. 2022. 507. 2. 125821-125821
Fumihito Abe and Keiichi Kato. H^s wave front set for Schrödinger equations with sub-quadratic potentlal. SUT Journal of Mathematics. 2021. 1. 57. 17-34
Keiichi Kato, Masaharu Kobayashi, Shingo Ito, Tadashi Takahashi. Representation of higher-order dispersive operators via short-time Fourier transform and its applications. TOHOKU MATHEMATICAL JOURNAL. 2021. 73. 1. 105-118
Keiichi Kato. On the reaction-diffusion system for some asymmetric synthesis. 数理解析研究所講究録. 2007. 1563. 141-147
Keiichi Kato. On the existence of solutions to the Benjamin-Ono equation with non differentiable initial data. GAKUTO International Series-Mathematical Sciences and Applications. 2006. 26. 101-109
Keiichi Kato, Takayoshi Ogawa, Elena Kaikina, Pavel Naumkin. Analytic smoothing effect for the Benjamin-Ono equations. 数理解析研究所講究録. 2001. 1204. 77-84
Non-smoothness of the fundamental solutions for Schrödinger equations with super-quadratic and spherically symmetric potentials
(日本数学会函数方程式論分科会 2024)
Construction of solutions to Schrödinger equations with potentials of quadratic or sub-quadratic growth
(International workshop Regularity and Singularity for Geometric PDE and related topics 2024)
Application of wave packet transform to Schrödinger equations(2回のサーベイ講演)
(研究集会「微分方程式の総合的研究」(日本数学会函数方程式論分科会) 2022)