Resumen de Positive Periodic Solutions to a Second-Order Singular Differential Equation with Indefinite Weights

Xuefeng Han, Zhibo Cheng

• The aim of this paper is to show that Krasnoselskiĭ’s-Guo fixed point theorem can be applied to a second-order singular differential equation with indefinite weights. Using the Green’s function, we prove the existence of a positive periodic solution for the second-order singular differential equation with indefinite weights. These results are applicable to weak as well as strong singularities