Building on min-max methods, Professor Ghoussoub systematically develops a general theory that can be applied in a variety of situations. In so doing he also presents a whole new array of duality and perturbation methods. The prerequisites for following this book are relatively few; an appendix sketching certain methods in analysis makes the book self-contained. | Duality and Perturbation Methods in Critical Point Theory by N. Ghoussoub, Paperback | Indigo Chapters