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This paper is concerned with the blowup phenomena for initial value problem of semilinear wave equation with critical time-dependent damping term (DW). The result is the sharp upper bound of lifespan of solution with respect to the small…

Analysis of PDEs · Mathematics 2017-09-14 Masahiro Ikeda , Motohiro Sobajima

In this paper we consider the initial-boundary value problem for the heat, damped wave, complex-Ginzburg-Landau and Schr"odinger equations with the power type nonlinearity $|u|^p$ with $p in (1,2]$ in a two-dimensional exterior domain.…

Analysis of PDEs · Mathematics 2017-11-06 Masahiro Ikeda , Motohiro Sobajima

In this paper, we consider the initial-boundary value problems with several fundamental boundary conditions (the Dirichlet/Neumann/Robin boundary condition) for the multi-component system of semi-linear classical damped wave equations…

Analysis of PDEs · Mathematics 2022-01-25 Tuan Anh Dao , Masahiro Ikeda

We consider the initial-boundary value problem of semilinear wave equation with nonlinearity $|u|^p$ in exterior domain in $\mathbf{R}^N$ $(N\geq 3)$. Especially, the lifespan of blowup solutions with small initial data are studied. The…

Analysis of PDEs · Mathematics 2018-12-24 Motohiro Sobajima , Kyouhei Wakasa

We investigate the lifespan of solutions to the higher-order semilinear parabolic equation $$u_t+(-\Delta)^m u=|u|^p, \quad x \in \mathbb{R}^n, t>0 $$ with initial data. We focus on the precise asymptotic behavior of the lifespan of…

Analysis of PDEs · Mathematics 2025-12-05 Nurdaulet N. Tobakhanov , Berikbol T. Torebek

The Fujita phenomenon for nonlinear parabolic problems $\partial tu = \Delta u + up$ in an exterior domain of RN under the dynamical boundary conditions is investigated in the superlinear case. As in the case of Dirichlet boundary…

Analysis of PDEs · Mathematics 2010-10-11 Jean-François Rault

The Fujita phenomenon for nonlinear parabolic problems dtu = \deltau + up in an exterior domain of RN under the Robin boundary conditions is investigated in the superlinear case. As in the case of Dirichlet boundary conditions, it turns out…

Analysis of PDEs · Mathematics 2010-10-08 Jean-François Rault

Let $\Omega$ be a bounded smooth domain in $\RR^N$. We consider the problem $u_t= \Delta u + V(x) u^p$ in $\Omega \times [0,T)$, with Dirichlet boundary conditions $u=0$ on $\partial \Omega \times [0,T)$ and initial datum $u(x,0)= M \phi…

Analysis of PDEs · Mathematics 2015-06-26 C. Cortazar , M. Elgueta , J. D. Rossi

This paper investigates the initial boundary value problem for a fractional pseudo-parabolic equation with singular potential. The global existence and blow-up of solutions to the initial boundary value problem are obtained at low initial…

Optimization and Control · Mathematics 2025-04-14 Xiang-kun Shao , Nan-jing Huang , Xue-song Li

This paper deals with the initial-boundary value problem to a nonlocal semilinear pseudo-parabolic equation with conical degeneration, which has been studied in [Global well-posedness for a nonlocal semilinear pseudo-parabolic equation with…

Analysis of PDEs · Mathematics 2023-06-07 Jingbo Meng , Guangyu Xu

This paper investigates the initial boundary value problem of a finitely degenerate semilinear pseudo-parabolic equation associated with H\"{o}rmander's operator. Based on the global existence of solutions in previous literature, the…

Mathematical Physics · Physics 2025-07-01 Xiang-kun Shao , Xue-song Li , Nan-jing Huang , Donal O'Regan

We consider the initial boundary value problem of a pseudo-parabolic equation with singular potential and the exponent $p(x,t)$ depending on both spatial and temporal variables. We prove the finite time blow up and estimate the upper and…

Analysis of PDEs · Mathematics 2025-12-16 Nguyen Thanh Tung , Le Xuan Truong , Tan Duc Do , Nguyen Ngoc Trong

The blow-up rate estimate for the solution to a semilinear parabolic equation $u_t=\Delta u+V(x) |u|^{p-1}u$ in $\Omega \times (0,T)$ with 0-Dirichlet boundary condition is obtained. As an application, it is shown that the asymptotic…

Analysis of PDEs · Mathematics 2007-05-23 Ting Cheng , Gao-Feng Zheng

We establish the first complete classification of finite-time blow-up scenarios for strong solutions to the three-dimensional incompressible Euler equations with surface tension in a bounded domain possessing a closed, moving free boundary.…

Analysis of PDEs · Mathematics 2025-07-15 Chengchun Hao , Tao Luo , Siqi Yang

In this paper, we consider the finite time blow-up results for a parabolic equation coupled with superlinear source term and local linear boundary dissipation. Using a concavity argument, we derive the sufficient conditions for the…

Analysis of PDEs · Mathematics 2022-05-13 Fenglong Sun , Yutai Wang , Hongjian Yin

This paper is concerned with the blow-up property of solutions to an initial boundary value problem for a reaction diffusion equation with special diffusion processes. It is shown, under certain conditions on the initial data, that the…

Analysis of PDEs · Mathematics 2020-06-11 Yuzhu Han

The article is devoted to investigating the initial boundary value problem for the damped wave equation in the scale-invariant case with time-dependent speed of propagation on the exterior domain. By presenting suitable multipliers and…

Analysis of PDEs · Mathematics 2023-11-28 Makram Hamouda , Mohamed Ali Hamza , Bouthaina Yousfi

In this paper we prove the blow-up theorem in the critical case for weakly coupled systems of semilinear wave equations in high dimensions. The upper bound of the lifespan of the solution is precisely clarified.

Analysis of PDEs · Mathematics 2014-04-22 Yuki Kurokawa , Hiroyuki Takamura , Kyouhei Wakasa

We consider the initial boundary value problem in exterior domain for semilinear wave equations with power-type nonlinearity |u| p. We will establish blow-up results when p is less than or equal to Strauss' exponent which is the same one…

Analysis of PDEs · Mathematics 2018-04-06 Ahmad Fino

In this paper, we investigate the initial boundary value problem of the following nonlinear extensible beam equation with nonlinear damping term $$u_{t t}+\Delta^2 u-M\left(\|\nabla u\|^2\right) \Delta u-\Delta u_t+\left|u_t\right|^{r-1}…

Analysis of PDEs · Mathematics 2023-05-16 Gongwei Liu , Mengyun Yin , Suxia Xia
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