Hüsseinov, F.2015-07-282015-07-2819970304-4068http://hdl.handle.net/11693/10895Possibility of representation of a value of convexification of function at the given point as a convex combination of the values of function (spannability) is studied. Spannability of functions turned out to be important in different fields e.g. in the study of quasi-cores of monetary economies with nonconvex preferences (mathematical economics), in the theory of relaxation of variation problems (variational calculus). Apparently, Shapley and Shubik (Econometrica, 1966, 34, 805-827) were first to discuss it.EnglishSpannability of functionsArticle10.1016/S0304-4068(96)00790-21873-1538