Kazumasa FUJIWARA
日本語

Global existence for a semilinear damped wave equation with certain positive initial displacement and negative initial velocity
Kazumasa Fujiwara
15th AIMS Conference on Dynamical Systems, Differential Equations, and Applications, Athens (July 6, 2026)
Remark on the decay of solutions to the semilinear damped wave equation with slowly decreasing data
Kazumasa Fujiwara
Workshop on Nonlinear Wave Equations, Fudan University (June 9, 2025)
Lifespan estimate for classical damped wave equations with some initial data
Kazumasa Fujiwara, Vladimir Georgiev
ICIAM 2023 (August 20, 2023)
A lifespan estimate for semilinear classical damped wave equations
Kazumasa Fujiwara, Vladimir Georgiev
Geometric Analysis in Harmonic Analysis and PDE, RIMS, Kyoto University (March 27, 2023)
Necessary and sufficient condition of L^2 global existence for a periodic nonlinear Schrödinger equation
Kazumasa Fujiwara
Webinar Critical exponent versus blow-up in evolution models (December 8, 2020)
Non existence of time-local solutions to semilinear semirelativistic equation in some subcritical case
Kazumasa Fujiwara
Dispersive and subelliptic PDEs (February 10, 2020)
Remark on the lifespan of semilinear classical damped wave equation
Kazumasa Fujiwara, Vladimir Georgiev
Analysis Seminar, Pisa University (Date not specified)
Remark on blow-up for the half Ginzburg-LandauKuramoto equation with rough coefficients
Kazumasa FUJIWARA
12th ISAAC Congress, University of Aveiro (Date not specified)
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An estimate for commutator of fractional Laplacian with rough metric
Kazumasa FUJIWARA
International Workshop on “Fundamental Problems in Mathematical and Theoretical Physics”, waseda university (Date not specified)
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A commutator estimate of fractional Laplacian with rough coefficients and its application
Kazumasa FUJIWARA
Harmonic Analysis and Nonlinear Partial Differential Equations, Research Institute for Mathematical Sciences (Date not specified)
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Local well-posedness and blow-up for the half Ginzburg-Landau-Kuramoto equation with rough coefficients and metric
Kazumasa FUJIWARA
The 45th Conference Applications of Mathematics in Engineering and Economics, Sozopol (Date not specified)
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On self-similar solutions to the derivative nonlinear Schr\odinger equation"
Kazumasa FUJIWARA
PDE Workshop Waseda - GSSI, L'Aquila-Pisa, Universit? di Pisa, Pisa University (Date not specified)
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A commutator estimate for fractional Laplacians with rough metrics
Kazumasa FUJIWARA
Fifth International Conference, New Trends in the Applications of Differential Equations in Sciences, Bulgarian Academy of Science (Date not specified)
A remark on blowup for weakly coupled heat systems by an ODE approach
Kazumasa FUJIWARA
EDP e DINTORNI, Bari University (Date not specified)
Lifespan of strong solutions to the periodic nonlinear Schr?dinger equation without gauge invariance
Kazumasa FUJIWARA
International Workshop on “Fundamental Problems in Mathematical and Theoretical Physics”, Waseda University (Date not specified)
Higher order fractional Leibniz estimates
Kazumasa FUJIWARA
ISAAC Congress 2017, Linn?us University (Date not specified)
Higher order fractional Leibniz rule Poster Presentation
Kazumasa FUJIWARA
Mathematical Analysis for Stability in Nonlinear Dynamics ‐in honor of Professor Vladimir Georgiev on his 60th birthday‐ (Date not specified)
Lifespan of strong solutions to the periodic nonlinear Schr?dinger equation without gauge invariance
Kazumasa FUJIWARA
11th AIMS Conference Series on Dynamical Systems and Differential Equations, Orlando (Date not specified)
Nonexistence of local solutions for the Cauchy problem of semirelativistic equations
Kazumasa FUJIWARA
Workshop on Analysis in Kagurazaka 2016, Tokyo University of Science (Date not specified)
Remark on local solvability of the Cauchy problem for semirelativistic equations
Kazumasa FUJIWARA
International Workshop on “Fundamental Problems in Mathematical and Theoretical Physics”, Waseda University (Date not specified)
Weighted Lp-boundedness of convolution type integral operators associated with bilinear estimates in the Sobolev space
Kazumasa FUJIWARA
RIMS Workshop: Harmonic Analysis and Nonlinear Partial Differential Equations, Kyoto University (Date not specified)
The well-posedness of the Cauchy problem for a semirelativistic system
Kazumasa FUJIWARA
10th AIMS Conference Series on Dynamical Systems and Differential Equations, the Universidad Autonoma de Madrid (Date not specified)
Well-posedness for the Cauchy problem of a system of semirelativistic equations
Kazumasa FUJIWARA
One Forum, Two Cities 2013: Aspect of Nonlinear PDEs, Waseda University (Date not specified)
On the decay of solutions to semilinear damped wave equations in the Fujita subcritical case
Kazumasa Fujiwara, Vladimir Geogiev
RIMS研究集会「分散型方程式における線形及び非線形解析の進展」, RIMS (May 19, 2025)
On the decay rate of solutions to semilinear damped wave equation with slowly decreasing initial data
Kazumasa Fujiwara, Vladimir Gerogiev
常微分方程式の定性的理論の構築とその汎用性の探求 (October 23, 2024)
On the global solvability for 1d semilinear damped wave equations
Kazumasa Fujiwara, Vladimir Georgiev
東北大学応用数理解析セミナー (June 20, 2024)
Lifespan estimate for classical damped wave equations with some initial data
Kazumasa Fujiwara
Kyoto University NLPDE Seminar (January 19, 2024)
Lifespan estimate for classical damped wave equations with some initial data
Kazumasa Fujiwara
鳥取PDE研究集会 (November 23, 2023)
Necessary and sufficient condition for global existence of $L^2$ solutions for 1D periodic NLS with non-gauge invariant quadratic nonlinearity
藤原和将, V. Georgiev
微分方程式の総合的研究 (December 24, 2022)
或る初期条件に対する半線型消散型波動方程式の存在時刻の評価
藤原 和将, Vladimir Georgiev
第3回大同大学若手セミナー,, 大同大学 (August 22, 2022)
On a test function method with fractional derivatives
藤原和将
第5回 反応拡散方程式と非線形分散型方程式の解の挙動, 熊本大学 (February 17, 2022)
Necessary and sufficient condition for global existence of L2 solutions for 1D periodic NLS with non-gauge invariant quadratic nonlinearity
Kazumasa Fujiwara
The 46th Sapporo Symposium on Partial Differential Equations (August 10, 2021)
周期境界条件に於ける絶対値冪乗型の非線型項を有するシュレーディンガー方程式に対する 時間大域可解性の為の自乗可積分な初期状態の必要充分条件
Kazumasa Fujiwara
名古屋微分方程式セミナー (April 12, 2021)
Necessary and sufficient condition for global existence of $L^2$ solutions for 1D periodic NLS with non-gauge invariant quadratic nonlinearity
Kazumasa Fujiwara
第10回室蘭非線形解析研究会 (January 8, 2021)
Necessary and sufficient condition for global existence of $L^2$ solutions for 1D periodic NLS with non-gauge invariant quadratic nonlinearity
Kazumasa Fujiwara
京都大学 NLPDE セミナー (December 11, 2020)
On self-similar solutions to the derivative nonlinear Schr?dinger equation
Kazumasa FUJIWARA
応用数理解析セミナー, Touhoku University (Date not specified)
A lifespan estimate for semilinear classical damped wave equations
Kazumasa Fujiwara, Vladimir Georgiev
京都駅前セミナー (Date not specified)
A lifespan estimate for classical damped wave equations with some initial data
藤原和将, V. Georgiev
名古屋微分方程式セミナー, 名古屋大学 (Date not specified)
或る初期条件に対する半線型消散型波動方程式の存在時刻の評価
藤原 和将, Vladimir Georgiev
名古屋大学多元数理科学研究科談話会 (Date not specified)
On the nonexistence of global solutions to the Cauchy problem for semirelativistic equations with power type nonlinearity
Kazumasa FUJIWARA
名古屋微分方程式セミナー, Naoya University (Date not specified)
Remark on chain rules in the Sobolev framework
藤原和将
Nonlinear wave equations (Date not specified)
A sufficient and necessary condition for blow-up of non-gauge invariant nonlinear periodic Schrödinger equations
Kazumasa Fujiwara
応用解析研究会 (Date not specified)
On the commutator estimate for the perturbed fractional Laplacian
Kazumasa FUJIWARA
第51回「南大阪応用数学セミナー」, Advanced Mathematical Institute, Osaka City University (Date not specified)
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On the blow-up phenomena for derivative type nonlinear Schr?dinger euqations on torus
Kazumasa FUJIWARA
平成29年度育志賞研究発表会,, Osaka University (Date not specified)
An ODE approach for the blow-up for nonlinear damped wave equations with time dependent damping
Kazumasa FUJIWARA
なかもず解析セミナー, Osaka Prefecture University (Date not specified)
An ODE approach for blow-up of some evolution equations in Fujita subcritical case
Kazumasa FUJIWARA
大阪駅前セミナー, Ryukoku University (Date not specified)
Blow-up for self-interacting fractional Ginzburg-Landau equation
Kazumasa FUJIWARA
第1回中央大学偏微分方程式セミナー, Chuo University (Date not specified)
Blow-up for self-interacting fractional Ginzburg-Landau equation and related commutator estimates
Kazumasa FUJIWARA
熊本大学応用解析セミナー, Kumamoto University (Date not specified)
Blow-up for self-interacting fractional Ginzburg-Landau equation
Kazumasa FUJIWARA
第 24 回応用解析研究会シンポジウム, Hakone (Date not specified)
Nonexistence of local solutions for the Cauchy problem of semirelativistic equations
Kazumasa FUJIWARA
The 22nd Machikaneyama Seminar on PDEs, Osaka University (Date not specified)
Solvability of semirelativistic equations in a scaling subcritical case
Kazumasa FUJIWARA
第 23 回応用解析研究会シンポジウム, Yugawara (Date not specified)
On the solvability of semirelativistic equation
Kazumasa FUJIWARA
第 41 回発展方程式研究会, Japan Women's University (Date not specified)
On the solvability of semirelativistic equation
Kazumasa FUJIWARA
MSJ Autumn meeting 2015, Kyoto Sangyo University (Date not specified)
On the global solvability to the Cauchy problem for semirelativistic equations with power type nonlinearity
Kazumasa FUJIWARA
第 22 回応用解析研究会シンポジウム, Atami (Date not specified)
A remark on global solutions to Semirelativistic equations with power type nonlinearity
Kazumasa FUJIWARA
数理物理に現れる偏微分方程式研究会, Izu (Date not specified)
On the well-posedness of semirelativistic system
Kazumasa FUJIWARA
三大学偏微分方程式セミナー, Chuo University (Date not specified)
On the solvability of semirelativistic system
Kazumasa FUJIWARA
第21回応用解析研究会シンポジウム, Hakone (Date not specified)
On the global well-posedness of semirelativistic system
Kazumasa FUJIWARA
MSJ Spring Meeting 2014, Gakusyuin University (Date not specified)
The well-posedness of the sermirelativistic equations with a quadratic nonlinearity
Kazumasa FUJIWARA
MSJ Autumn Meeting 2013, Ehime University (Date not specified)
The well-posedness of the sermirelativistic equations with a quadratic nonlinearity
Kazumasa FUJIWARA
第 35 回発展方程式若手セミナー, Yamagata University (Date not specified)