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Related papers: On extended lifespan for 1d damped wave equation

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In this manuscript, a sharp lifespan estimate of solutions to semilinear classical damped wave equation is investigated in one dimensional case when the Fourier 0th moment of sum of initial position and speed is $0$. Especially, it is shown…

Analysis of PDEs · Mathematics 2023-08-23 Kazumasa Fujiwara , Vladimir Georgiev

This paper concerns estimates of the lifespan of solutions to the semilinear damped wave equation. We give upper estimates of the lifespan for the semilinear damped wave equation with variable coefficients in all space dimensions.

Analysis of PDEs · Mathematics 2015-08-21 Masahiro Ikeda , Yuta Wakasugi

This paper studies the upper and lower bounds of the lifespan for the classical solutions to the initial value problems of one dimensional wave equations with non-autonomous semilinear terms including the space-derivative of the unknown…

Analysis of PDEs · Mathematics 2026-05-11 Ning-An Lai , Cui Ren , Takiko Sasaki , Hiroyuki Takamura

This paper studies initial value problems for semilinear wave equations with spatial weights in one space dimension. The lifespan estimates of classical solutions for compactly supported data are established in all the cases of polynomial…

Analysis of PDEs · Mathematics 2021-11-23 Shunsuke Kitamura , Katsuaki Morisawa , Hiroyuki Takamura

This paper is devoted to the lifespan estimates of small classical solutions of the initial value problems for one dimensional wave equations with semilinear terms of the spatial derivative of the unknown function. It is natural that the…

Analysis of PDEs · Mathematics 2023-09-19 Takiko Sasaki , Shu Takamatsu , Hiroyuki Takamura

In this paper, we overview the recent progresses on the lifespan estimates of classical solutions of the initial value problems for nonlinear wave equations in one space dimension. There are mainly two directions of the developments on the…

Analysis of PDEs · Mathematics 2024-03-19 Hiroyuki Takamura

We consider initial value problem for semilinear damped wave equations in three space dimensions. We show the small data global existence for the problem without the spherically symmetric assumption and obtain the sharp lifespan of the…

Analysis of PDEs · Mathematics 2018-12-18 Masakazu Kato , Miku Sakuraba

We consider the initial value problem for the semilinear wave equation with time-dependent effective damping. The interest is the behavior of lifespan of solutions in view of the asymptotic profile of the damping as $t\to \infty$. The…

Analysis of PDEs · Mathematics 2021-12-14 Masahiro Ikeda , Motohiro Sobajima , Yuta Wakasugi

In this paper, we study the initial value problem for semilinear wave equations with the time-dependent and scale-invariant damping in two dimensions. Similarly to the one dimensional case by Kato, Takamura and Wakasa in 2019, we obtain the…

Analysis of PDEs · Mathematics 2021-11-30 Takuto Imai , Masakazu Kato , Hiroyuki Takamura , Kyouhei Wakasa

The critical constant of time-decaying damping in the scale-invariant case is recently conjectured. It also has been expected that the lifespan estimate is the same as for the associated semilinear heat equations if the constant is in the…

Analysis of PDEs · Mathematics 2019-10-24 Masakazu Kato , Hiroyuki Takamura , Kyouhei Wakasa

In this paper, we study the lifespan estimates of classical solutions for semilinear wave equations with characteristic weights and compactly supported data in one space dimension. The results include those for weights by time-variable, but…

Analysis of PDEs · Mathematics 2023-06-27 Shunsuke Kitamura , Hiroyuki Takamura , Kyouhei Wakasa

This paper is devoted to the initial value problems for semilinear wave equations of derivative type with spatial weights in one space dimension. The lifespan estimates of classical solutions are quite different from those for nonlinearity…

Analysis of PDEs · Mathematics 2023-03-24 Shunsuke Kitamura , Katsuaki Morisawa , Hiroyuki Takamura

In this article, we investigate the blow-up for local solutions to a semilinear wave equation in the generalized Einstein - de Sitter spacetime with nonlinearity of derivative type. More precisely, we consider a semilinear damped wave…

Analysis of PDEs · Mathematics 2022-06-22 Makram Hamouda , Mohamed Ali Hamza , Alessandro Palmieri

The open question, which seems to be also the final part, in terms of studying the Cauchy problem for the weakly coupled system of damped wave equations or reaction-diffusion equations, is so far known as the sharp lifespan estimates in the…

Analysis of PDEs · Mathematics 2022-01-27 Wenhui Chen , Tuan Anh Dao

This paper studies the upper bound of the lifespan of classical solutions of the initial value problems for one dimensional wave equations with quasilinear terms of space-, or time-derivatives of the unknown function. The results are same…

Analysis of PDEs · Mathematics 2024-09-11 Yuki Haruyama , Hiroyuki Takamura

For small-amplitude semilinear wave equations with power type nonlinearity on the first-order spatial derivative, the expected sharp upper bound on the lifespan of solutions is obtained for both critical cases and subcritical cases, for all…

Analysis of PDEs · Mathematics 2024-06-05 Kerun Shao , Hiroyuki Takamura , Chengbo Wang

In this paper we focus on the global-in-time existence and the pointwise estimates of solutions to the initial value problem for the semilinear dissipative wave equation in multi-dimensions. By using the method of Green function combined…

Analysis of PDEs · Mathematics 2010-01-06 Yongqin Liu

In this paper, we consider the initial value problem for nonlinear wave equation with weighted nonlinear terms in one space dimension. Kubo & Osaka & Yazici(2013) studied global solvability of the problem under different conditions on the…

Analysis of PDEs · Mathematics 2014-09-23 Kyouhei Wakasa

In this paper, we are focusing on proofs of a blow-up result for a quadratic semilinear wave equation in two space dimensions. There is a logarithmic loss in estimating the lifespan of a classical solution if the 0th moment of the initial…

Analysis of PDEs · Mathematics 2026-05-11 Masakazu Kato , Hiroyuki Takamura , Kyouhei Wakasa

In this paper, we investigate the lifespan estimates of classical solutions of the initial value problems for semilinear wave equations of derivative type with characteristic weights in one space dimension. Such equations provide us basic…

Analysis of PDEs · Mathematics 2023-01-23 Shunsuke Kitamura
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