Multiplicity of positive radial solutions for an elliptic inclusion system on an annulus

摘要

In this paper, we present the sufficient conditions for existence and multiplicity of positive radial solutions for elliptic inclusion systems. Our results are obtained by utilizing the generalization of Leggett and Williams's fixed point theorem, established in this paper, for the norm-type cone expansion and compression of multivalued operators. (C) 2007 Elsevier B.V. All rights reserved.