This book reflects a significant part of authors' research activity dur ing the last ten years. The present monograph is constructed on the results obtained by

This book focuses on nonlinear boundary value problems and the aspects of nonlinear analysis which are necessary to their study. The authors first give a compre

This book reflects a significant part of authors' research activity dur ing the last ten years. The present monograph is constructed on the results obtained by

Starting in the early 1980s, people using the tools of nonsmooth analysis developed some remarkable nonsmooth extensions of the existing critical point theory.

This monograph focuses primarily on nonsmooth variational problems that arise from boundary value problems with nonsmooth data and/or nonsmooth constraints, suc