Protasov, I. V.; Protasova, O. I.
(Луганский национальный университет им. Т. Шевченко, 2005)
Let X be a set of cardinality k, F be a family of subsets of X. We say that a cardinal , < k, is a color-detector of the hypergraph H = (X,F) if card (X) for every coloring : X ! k such that card (F) for ...