For nonsmooth operators, different kinds of approximations are introduced and their relationships are studied. With the aid of these approximations, F. John and Karush–Kuhn–Tucker conditions are established for optimization problems with operator inequality contraints.
Cite this article
W. Schirotzek, H.-P. Scheffler, Necessary Optimality Conditions for Nonsmooth Problems with Operator Constraints. Z. Anal. Anwend. 7 (1988), no. 5, pp. 419–430