
The subject of the present book is sub differential calculus. The main source of this branch of functional analysis is the theory of extremal problems. For a start, we explicate the origin and statement of the principal problems of sub differential calculus. To this end, consider...

Preface. 1. Convex Correspondences and Operators. 2. Geometry and Subdifferentials. 3. Convexity and Openness. 4. The Apparatus of Subdifferential Calculus. 5. Convex Extremal Problems. 6. Local Convex Approximations. References. Author Index. Subject Index. Symbol Index.