PORTUGALIAE MATHEMATICA Vol. 61, No. 2, pp. 147159 (2004) 

Stabilization of a wavewave systemN. Aissa and D. HamrounUSTHB, Faculté de Mathématiques,BP 32 El Alia, Bab Ezzouar  ALGER Email: djamroun@yahoo.fr Abstract: In this paper, we use the multiplier method to study the energy decay of a coupling of a wave equation posed on a square $\Omega $ of $\mathbb{R}^2$ with a wave equation posed on one of its sides $\Gamma_0$. We prove that if the dissipation is located both on $\Omega$ and $\Gamma_0$, then the energy decays exponentially. Keywords: wave equation; semigroup; stability; multipliers. Classification (MSC2000): 35B40, 35C20, 35L20, 35P20, 49N35. Full text of the article:
Electronic version published on: 7 Mar 2008.
© 2004 Sociedade Portuguesa de Matemática
