Subharmonic solutions for some second-order differential equations with singularities
SIAM Journal on Mathematical Analysis
Nonlinear Analysis: Theory, Methods & Applications
Positive solutions of periodic boundary value problems for impulsive differential equations
Computers & Mathematics with Applications
Hi-index | 0.09 |
This paper is devoted to study the existence of positive solutions to the second-order semipositone periodic boundary value problem x'' + a(t)x = f(t,x), x(0) = x(1), x'(0) = x'(1). Here, f (t, x) may be singular at x = 0 and may be superlinear at x = +~. Our analysis relies on a fixed-point theorem in cones.