# American Institute of Mathematical Sciences

2004, 3(4): 921-934. doi: 10.3934/cpaa.2004.3.921

## Asymptotic regularity of solutions of a nonautonomous damped wave equation with a critical growth exponent

 1 Institute of Information Transmission Problems, Russian Academy of Sciences, Bol’shoi Karetnyi 19, 127994, GSP-4, Moscow, Russian Federation

Received  December 2003 Revised  June 2004 Published  September 2004

The paper is devoted to study of the longtime behavior of solutions of a damped semilinear wave equation in a bounded smooth domain of $\mathbb R^3$ with the nonautonomous external forces and with the critical cubic growth rate of the nonlinearity. In contrast to the previous papers, we prove the dissipativity of this equation in higher energy spaces $E^\alpha$, $0<\alpha\le 1$, without the usage of the dissipation integral (which is infinite in our case).
Citation: Sergey Zelik. Asymptotic regularity of solutions of a nonautonomous damped wave equation with a critical growth exponent. Communications on Pure & Applied Analysis, 2004, 3 (4) : 921-934. doi: 10.3934/cpaa.2004.3.921
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