Zeidler E. Nonlinear Functional Analysis and its Applications III: Variational Methods and Optimization

Springer, 1985. — 675 p.
The title of Part III, Variational Methods and Optimization, indicates that we consider aspects of the classical calculus of variations as well as modem optimization theory and their interrelationships. By working out the supporting ideas and general fundamental principles, we also wish to help the reader obtain an understanding of the substance of the extraordinarily comprehensive and turbulently accumulating literature on extremal problems, to classify these works according to their ideas, and to note the emergence of new ideas.