On Quasidifferentiable Functions and Non-Differentiable Programming
B. M. Glover · Optimization · 1992
For vector-valued difference sublinear functions a Farkas type solvability result is established in a non-homogeneous form. This is used to establish both necessary and sufficient optimality conditions of the Karush-Kuhn-Tucker type for programming problems involving quasidifferentiable constraint functions, in the sense of Demyanov, and differentiable objective functions