For three classes of singularly perturbed boundary value problems we study the existence of solutions which possess boundary, shock and corner layer behavior an

To understand multiscale phenomena, it is essential to employ asymptotic methods to construct approximate solutions and to design effective computational algori

This engaging text describes the development of singular perturbations, including its history, accumulating literature, and its current status. While the approa

This volume contains 35 of the contributions to the international meeting Wave Phenomena: Modern Theory and Applications, held at the University of Toronto, Can