Document Type : Research Paper

Author

Department of Mathematics, Faculty of Sciences, University of Monastir, P.O.Box 5019, Monastir, Tunisia.

Abstract

This article  concerns the existence of fast homoclinic solutions for the following damped vibration system
\begin{equation*}
\frac{d}{dt}(P(t)\dot{u}(t))+q(t)P(t)\dot{u}(t)-L(t)u(t)+\nabla W(t,u(t))=0,
\end{equation*}
where $P,L\in C\left(\mathbb{R},\mathbb{R}^{N^{2}}\right)$ are symmetric and positive definite matrices, $q\in C\left(\mathbb{R},\mathbb{R}\right)$ and $W\in C^{1}\left(\mathbb{R}\times\mathbb{R}^{N},\mathbb{R}\right)$. Applying the Fountain Theorem and Dual Fountain Theorem, we prove the above system possesses two different sequences of fast homoclinic solutions when $L$ satisfies a new coercive condition and the potential $W(t,x)$ is combined nonlinearity.

Keywords

Main Subjects

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