%0 Journal Article %A V. V. Gorokhovik %T Step-Affine Functions, Halfspaces, and Separation of Convex Sets with Applications to Convex Optimization Problems %J Trudy Instituta matematiki i mehaniki %D 2020 %P 51-70 %V 26 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMM_2020_26_1_a4/ %G ru %F TIMM_2020_26_1_a4