# American Institute of Mathematical Sciences

August  2012, 5(4): 715-727. doi: 10.3934/dcdss.2012.5.715

## Multiplicity results to elliptic problems in $\mathbb{R}^N$

 1 Dipartimento Patrimonio Architettonico e Urbanistico, Facoltà di Architettura, Università di Reggio Calabria, Salita Melissari, 89124 Reggio Calabria, Italy 2 Department of Science for Engineering and Architecture (Mathematics Section), Engineering Faculty, University of Messina, 98166 - Messina, Italy

Received  January 2011 Revised  June 2011 Published  November 2011

The aim of this paper is to investigate elliptic variational-hemivariational inequalities on unbounded domains. In particular, by using a recent critical point theorem, existence results of at least two nontrivial solutions are established.
Citation: Giuseppina Barletta, Gabriele Bonanno. Multiplicity results to elliptic problems in $\mathbb{R}^N$. Discrete & Continuous Dynamical Systems - S, 2012, 5 (4) : 715-727. doi: 10.3934/dcdss.2012.5.715
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##### References:
 [1] R. A. Adams, "Sobolev Spaces,", Pure and Applied Mathematics, (1975). Google Scholar [2] G. Barletta, Existence of solutions for some discontinuous problems involving the p-Laplacian,, J. Nonlinear Funct. Anal. Differ. Equ., 2 (2008), 95. Google Scholar [3] G. Bonanno and P. Candito, Non-differentiable functionals and applications to elliptic problems with discontinuous nonlinearities,, J. Differential Equations, 244 (2008), 3031. doi: 10.1016/j.jde.2008.02.025. Google Scholar [4] H. Brézis, "Analyse Fonctionnelle - Théorie et Applications,", Collection Mathématiques Appliquées pur la Maîtrise, (1983). Google Scholar [5] F. H. Clarke, "Optimization and Nonsmooth Analysis," Second edition,, Classics Appl. Math., 5 (1990). Google Scholar [6] J. V. Gonçalves and C. O. Alves, Existence of positive solutions for $m-$laplacian equations in $\mathbbR^N$ involving critical Sobolev exponents,, Nonlinear Anal., 32 (1998), 53. doi: 10.1016/S0362-546X(97)00452-5. Google Scholar [7] A. Kristály, C. Varga and V. Varga, A nonsmooth principle of symmetric criticality and variational–hemivariational inequalities,, J. Math. Anal. Appl., 325 (2007), 975. doi: 10.1016/j.jmaa.2006.02.062. Google Scholar [8] A. Kristály, A double eigenvalue problem for Schrödinger equations involving sublinear nonlinearities at infinity,, Electron. J. Differential Equations, 2007 (): 1. Google Scholar [9] S. A. Marano and D. Motreanu, On a three critical points theorem for non-differentiable functions and applications to nonlinear boundary value problems,, Nonlinear Anal., 48 (2002), 37. doi: 10.1016/S0362-546X(00)00171-1. Google Scholar [10] B. Ricceri, On a three critical points theorem,, Arch. Math. (Basel), 75 (2000), 220. Google Scholar [11] G. Zhang and S. Liu, Three symmetric solutions for a class of elliptic equations involving the p-Laplacian with discontinuous nonlinearities in $\mathbbR^N$,, Nonlinear Anal., 67 (2007), 2232. doi: 10.1016/j.na.2006.09.013. Google Scholar
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