Multiple Solutions of Periodic Boundary Value Problems for Second Order Resonance Differential Equations
Weigao Ge · Shuxue de shijian yu renshi · 2008
The existence of multiple nonnegative solutions for periodic boundary value problems is studied by constructing the function for the concerning nonresonance linear PBVP.By applying the Schauder's fixed point theorem and cone expansion-compression type Krasnolselslii′s fixed point theorem,the sufficient condition is established.