%0 Journal Article
%T Optimal Positive Solutions of a Nonlinear Fourth Order Periodic Boundary Value Problem<br>非线性四阶周期边值问题的最优正解
%A 张丽莉
%J 数学物理学报(A辑)
%D 2009
%I 
%X The fourth order periodic boundary value problem u(4)-m4u+F(t, u(τ(t)))=0, 0(i)(0)=u(i)(2π), i=0,1, 2, 3,  is studied by using the fixed point theorem in cones, where F:0, 2π]×R+→ R+ and τ: 0, 2τi]→0, 2π] are continuous and  0-7.
%K Positive solutionszz
%K Periodic boundary value problemzz
%K Fixed point theoremzz<br>正解
%K 周期边值问题
%K 不动点定理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=37F46C35E03B4B86&jid=4DB553CDB5F521D8C921082E5C95EC80&aid=40976CEFFD1A562592BF3DE938CE99A1&yid=DE12191FBD62783C&vid=771469D9D58C34FF&iid=94C357A881DFC066&sid=30D259683AC50F0D&eid=1E0D46E7B42E2E81&journal_id=1003-3998&journal_name=数学物理学报(A辑)&referenced_num=1&reference_num=9