Hexi University, Department of Mathematics, Gansu, 734000, PR China.
AMS Subject Classifications: 34B15.
This paper presents some solvability criteria for the second order nonlinear equation
with one of the following boundary conditions
Under the appropriate nonlinear restriction of nonlinearity, solvability criteria for generalized Sturm–Liouville boundary value problems at resonance are established by means of coincidence degree theory of Mawhin type.
Sturm–Liouville problem, Fredholm mapping, coincidence degree