%0 Journal Article
%T MULTIPLICITY OF POSITIVE PERIODIC SOLUTIONS TO SECOND ORDER SINGULAR DIFFERENTIAL SYSTEMS
%A Lin Xiaoning
%A <br>林晓宁
%J 数学物理学报(A辑)
%D 2006
%I 
%X In this article, the author is devoted to establish the multiplicity of positive periodic solutions to second-order singular differential systems. It isproved that such a problem has at least two positive solutions under our reasonable conditions. The proof relies on a nonlinear alternative of Leray--Schauder type and Krasnoselskii fixed point theorem in cones.
%K Singularzz
%K Periodic solutionzz
%K Leray-Schauder alternativezz
%K Fixed point theorem in coneszz<br>Singular
%K Periodic
%K solution
%K Leray-Schauder
%K alternative
%K Fixed
%K point
%K theorem
%K in
%K cones
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=37F46C35E03B4B86&jid=4DB553CDB5F521D8C921082E5C95EC80&aid=AD826163DB79F987A92D62BD32674773&yid=37904DC365DD7266&vid=96C778EE049EE47D&iid=B31275AF3241DB2D&sid=9236E752FE2887AD&journal_id=1003-3998&journal_name=数学物理学报(A辑)&referenced_num=0&reference_num=0