Generalized Nonsmooth Invexity
R. N. Kaul, Surjeet Kaur Suneja, C. S. Lalitha · Journal of Information and Optimization Sciences · 1994
In this paper sufficient optimality conditions and duality results are established for a nonlinear programming problem without differentiability assumption on the data wherein Clarke’s generalized gradient is used to define invexity, pβeudoinvexity and quasiinvexity for Lipβchitz functions.