Electronic Journal of Differential Equations,
Vol. 2004(2004), No. 143, pp. 1-8.
Title: Twin positive solutions for fourth-order two-point
boundary-value problems with sign changing nonlinearities
Authors: Yu Tian (Beijing Institute of Technology, China)
Weigao Ge (Beijing Institute of Technology, China)
Abstract:
A new fixed point theorem on double cones is applied to obtain
the existence of at least two positive solutions to
\begin{gather*}
(\Phi_p(y''(t))''-a(t)f(t,y(t),y''(t))=0,\quad 0