Families of finite sets with minimum shadows
The summary of the authors: ``The following problem was answered by a theorem of Kruskal, Katona, and Lindström about 20 years ago: Given a family of k-element sets \(F,| F| =m\), at least how many (k-d)- element subsets are contained in the members of F? This paper deals with the extremal families, e.g., they are completely described for infinitely many values of m.''
scientific article; zbMATH DE number 4043846