Variational methods and their generalizations have been verified to be useful tools in proving the existence of solutions to a variety of boundary value problems for ordinary, impulsive, and partial d
This graduate textbook explains some of the early results on limit-point and limit-circle results for linear equations, such as those of Wintner, and various attempts at extensions to nonlinear eq
Mathematicians Graef (U. of Tennessee-Chattanooga), Henderson (Baylor U.), and Ouahab (Sidi-Bel-Abbes U., Algeria) explore differential equations that account for abrupt changes, such as shocks, harve
Topological Methods for Differential Equations and Inclusions covers the important topics involving topological methods in the theory of systems of differential equations. The equivalence between a co
This book provides cutting-edge results on the existence of multiple positive periodic solutions of first-order functional differential equations. It demonstrates how the Leggett-Williams fixed-point
This book deals with the existence and stability of solutions to initial and boundary value problems for functional differential and integral equations and inclusions involving the Riemann-Liouville,
