Linear and nonlinear, second-order problems with Sturm-Liouville-type, multi-point boundary conditions

Bryan P. Rynne

We consider the nonlinear equation $$-u^{\prime \prime }=f(u)+h,\text{on}(-1,1),$$ where $f:\mathbb{R}\to \mathbb{R}$ and $h:[-1,1]\to \mathbb{R}$ are continuous, toge…