Existence and Uniqueness Results for Perturbed Neumann Boundary Value Problems
© J. Zhang and C. Zhai. 2010
Received: 20 April 2010
Accepted: 28 June 2010
Published: 29 July 2010
Using a fixed point theorem of general -concave operators, we present in this paper criteria which guarantee the existence and uniqueness of positive solutions for two classes of nonlinear perturbed Neumann boundary value problems for second-order differential equations. The theorems for Neumann boundary value problems obtained are very general.
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