semi-continuities of marginal functions in a sequential setting
Maria Beatrice Lignola, Jacqueline Morgan · Optimization · 1992
In convergence spaces (for example topological spaces not necessarily first countable) "sequential" sufficient conditions of minimal character are given in order to obtain the sequential upper and lower semi-continuity of functions defined by: Different situations are considered: the unconstrained case, when Y is a general multifunction and when Y(x) is defined by inequalities dependent on x