%0 Journal Article
%T The Existence and Multiplicity of Positive Solutions for Second-Order Periodic Boundary Value Problem
%A Feng Wang
%A Fang Zhang
%A Fuli Wang
%J Journal of Function Spaces and Applications
%D 2012
%I Hindawi Publishing Corporation
%R 10.1155/2012/725646
%X The existence and multiplicity of positive solutions are established for second-order periodic boundary value problem. Our results are based on the theory of a fixed point index for A-proper semilinear operators defined on cones due to Cremins. Our approach is different in essence from other papers and the main results of this paper are also new.
%U http://www.hindawi.com/journals/jfsa/2012/725646/