There are several applications of maximal intersecting families (MIFs) and different notions of fairness. We survey known results regarding the enumeration of MIFs, and we conclude the enumeration of the 207,650,662,008 maximal families of intersecting subsets of X whose group of symmetries is trans
Intersecting Balanced Families of Sets
β Scribed by Adam Idzik; Gyula O.H. Katona; Rajiv Vohra
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 117 KB
- Volume
- 93
- Category
- Article
- ISSN
- 0097-3165
No coin nor oath required. For personal study only.
β¦ Synopsis
Suppose that any t members (t 2) of a regular family on an n element set have at least k common elements. It is proved that the largest member of the family has at least k 1Γt n 1&1Γt elements. The same holds for balanced families, which is a generalization of the regularity. The estimate is asymptotically sharp.
π SIMILAR VOLUMES
For fixed s, n, k, and t, let I s (n, k, t) denote the set of all such families. A family A # I s (n, k, t) is said to be maximal if it is not properly contained in any other family in I s (n, k, t). We show that for fixed s, k, t, there is an integer n 0 =n 0 (k, s, t), for which the maximal famili
## Abstract The intersection dimension of a bipartite graph with respect to a type __L__ is the smallest number __t__ for which it is possible to assign sets __A__~__x__~β{1, β¦, __t__} of labels to vertices __x__ so that any two vertices __x__ and __y__ from different parts are adjacent if and only
A family of r sets is called a 2-system if any two sets have the same intersection. Denote by F(n, r) the most number of subsets of an n-element set which do not contain a 2-system consisting of r sets. Constructive new lower bounds for F(n, r) are given which improve known probabilistic results, an