Functional differential equations have received attention since the 1920's. Within that development, boundary value problems have played a prominent role in bot

This open access book presents a comprehensive survey of modern operator techniques for boundary value problems and spectral theory, employing abstract boundary

This monograph explores nonoscillation and existence of positive solutions for functional differential equations and describes their applications to maximum pri

Boundary value problems for elliptic differential-difference equations have some astonishing properties. For example, unlike elliptic differential equations, th

The need to investigate functional differential equations with discontinuous delays is addressed in this book. Recording the work and findings of several scient