Techniques and principles of minimax theory play a key role in many areas of research, including game theory, optimization, and computational complexity. In gen

Many boundary value problems are equivalent to Au=O (1) where A : X --+ Y is a mapping between two Banach spaces. When the problem is variational, there exists

The book provides an introduction to minimax methods in critical point theory and shows their use in existence questions for nonlinear differential equations. A

iPositive Give a man a fish, he eats for a day, but if you teach him to fish, you feed him for life. Such is the approach of iPositive. One day at the gym doesn

This volume contains both survey and creative papers dealing with Morse theory, minimax theory, iteration theory of Maslov-type index and critical minimization