-called d.c. problem and the convex maximization problem. In this paper, we investigate the underlying local optimality … conditions, which, in general, are necessary, but not sufficient conditions. We establish sufficient local optimality conditions …

also the conditions of their local optimality. We calculate also such efficiencies for the family of distribution …

formulate the conditions of local optimality. For some known statistics and such alternatives as location, scale and skew models …