New constructions for local approximation of Lipschitz functions.II Original Research Article

In this paper, some properties of the set-valued mapping Dαf(.)Dαf(.) connected with the new approximation method of a function f(.)f(.) defined in the first part of the article are given. Continuity and Lipschitz properties of Dαf(.)Dαf(.) are formulated. A continuous extension of the Clarke subdifferential of any function represented as a difference of two convex functions is given. For the convex case, the set-valued mapping Dαf(.)Dαf(.) is similar to the εε-subdifferential mapping.