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EXISTENCE AND MULTIPLICITY OF SOLUTIONS FOR AN ELLIPTIC EQUATION WITH $p(x)$-GROWTH CONDITIONS

Published online by Cambridge University Press:  06 December 2006

MIHAI MIHĂILESCU
Affiliation:
Department of Mathematics, University of Craiova, 200585 Craiova, Romania e-mail: mmihailes@yahoo.com
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Abstract

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We study a partial differential equation on a bounded domain $\Omega\subset\mathbb{R}^N$ with a $p(x)$-growth condition in the divergence operator and we establish the existence of at least two nontrivial weak solutions in the generalized Sobolev space $W_0^{1,p(x)}(\Omega)$. Such equations have been derived as models of several physical phenomena. Our proofs rely essentially on critical point theory combined with corresponding variational techniques.

Type
Research Article
Copyright
2006 Glasgow Mathematical Journal Trust