Radial solutions for Neumann problems with \phi-Laplacians and pendulum-like nonlinearities

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June 2010, 28(2): 637-648. doi: 10.3934/dcds.2010.28.637

Radial solutions for Neumann problems with $\phi$-Laplacians and pendulum-like nonlinearities

Cristian Bereanu ^1, , Petru Jebelean ^2, and Jean Mawhin ^3,

1.	Institute of Mathematics "Simion Stoilow” of the Romanian Academy, 21, Calea Griviţei, RO-010702-Bucharest, Sector 1, Romania
2.	Department of Mathematics, West University of Timişoara, 4, Blvd. V. Pârvan, RO-300223-Timişoara, Romania
3.	Institute of Mathematics and Physics, Université Catholique de Louvain, 2, chemin du cyclotron, B-1348 Louvain-la-Neuve, Belgium

Received January 2010 Revised April 2010 Published April 2010

Abstract
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In this paper we study the existence and multiplicity of radial solutions for Neumann problems in a ball and in an annular domain, associated to pendulum-like perturbations of mean curvature operators in Euclidean and Minkowski spaces and of the $p$-Laplacian operator. Our approach relies on the Leray-Schauder degree and the upper and lower solutions method.

Keywords: mean curvature and $p$-Laplacian operators, Neumann problem, Leray-Schauder degree, upper and lower solutions., pendulum-like nonlinearities.

Mathematics Subject Classification: Primary: 35J65; Secondary: 34B1.

Citation: Cristian Bereanu, Petru Jebelean, Jean Mawhin. Radial solutions for Neumann problems with $\phi$-Laplacians and pendulum-like nonlinearities. Discrete & Continuous Dynamical Systems - A, 2010, 28 (2) : 637-648. doi: 10.3934/dcds.2010.28.637

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