%0 Journal Article
%T Existence and nonexistence results for second-order Neumann boundary value problem
%A Feng Wang
%A Yujun Cui
%A Fang Zhang
%J Surveys in Mathematics and its Applications
%D 2009
%I University Constantin Brancusi of Targu-Jiu
%X In this paper some existence and nonexistence results for positive solutions are obtained for second-order boundary value problem -u"+Mu=f(t,u),    t¡Ê(0,1) with Neumann boundary conditions u'(0)=u'(1)=0, where M>0,  f¡ÊC([0,1]¡ÁR+, R+). By making use of fixed point index theory in cones, some new results are obtained.
%K Neumann BVP
%K Positive solutions
%K Cone
%K Fixed point index.
%U http://www.utgjiu.ro/math/sma/v04/p01.pdf