Explicit matchings in the middle levels of the Boolean lattice
β Scribed by H. A. Kierstead; W. T. Trotter
- Publisher
- Springer Netherlands
- Year
- 1988
- Tongue
- English
- Weight
- 542 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0167-8094
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Let B(j,k; n) be the ordered set obtained by ordering the j element and k element subsets of an n element set by inclusion. We review results and proof techniques concerning the dimension dim(j,k;n) of B (j,k;n) for various ranges of the arguments j, k, and n.
A cutset in the poset 2 [n] , of subsets of [1, ..., n] ordered by inclusion, is a subset of 2 [n] that intersects every maximal chain. Let 0 : 1 be a real number. Is it possible to find a cutset in 2 [n] that, for each 0 i n, contains at most : ( n i ) subsets of size i ? Let :(n) be the greatest l