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Applicable Analysis
An International Journal
Volume 92, 2013 - Issue 6
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Articles

Blow-up of solutions to systems of nonlinear wave equations with supercritical sources

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Pages 1101-1115 | Received 06 Aug 2011, Accepted 11 Dec 2011, Published online: 20 Jan 2012
 

Abstract

In this article, we focus on the life span of solutions to the following system of nonlinear wave equations:

in a bounded domain Ω ⊂ ℝ n with Robin and Dirichlét boundary conditions on u and v, respectively. The nonlinearities f 1(u, v) and f 2(u, v) represent strong sources of supercritical order, while g 1(u t ) and g 2(v t ) represent interior damping. The nonlinear boundary condition on u, namely ∂ν u + u + g(u t ) = h(u) on Γ, also features h(u), a boundary source, and g(u t ), a boundary damping. Under some restrictions on the parameters, we prove that every weak solution to system above blows up in finite time, provided the initial energy is negative.

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