AbstractThe objectives of this paper are three-fold. First, we would like to call attention to a very attractive problem, the question of whether or not the poset of integer partitions ordered by refinement has the Sperner property. We provide all necessary definitions, and enough bibliography to interest a newcomer in the problem. Second, we prove four new theorems, two by exhaustive computation and two in the more traditional manner. Finally, we highlight the central role played by Larry Harper in the literature of this subject
AbstractNew properties that involve matchings, cutsets, or skipless chain partitions in graded poset...
AbstractConsider the posetΠnof partitions of ann-element set, ordered by refinement. The sizes of th...
AbstractLet F be a Sperner family of subsets of {1,…,m}. Bollobás showed that if A ∈ F ⇒ A = {1,…,m}...
AbstractThe objectives of this paper are three-fold. First, we would like to call attention to a ver...
The objectives of this paper are three-fold. First, we would like to call attention to a very attrac...
AbstractA procedure for partitioning the collection of divisors of an integer into symmetric chains ...
AbstractWe study the posets (partially ordered sets) Pn of partitions of an integer n, ordered by re...
AbstractAn old conjecture of Stanley's is confirmed, namely that the lattice of bounded column stric...
AbstractA procedure for partitioning the collection of divisors of an integer into symmetric chains ...
AbstractA ranked poset P has the Sperner property if the sizes of the largest rank and of the larges...
A procedure for partitioning the collection of divisors of an integer into symmetric chains is descr...
AbstractA subset A of a poset P is a q-antichain if it can be obtained as the union of at most q ant...
AbstractIf P is a partially ordered set, a k-family of P is a subset which contains no chains of len...
AbstractMotivated by the problem of estimating the age (in generations) of a population that evolves...
AbstractConsider any sets x⊆y⊆{1,…,n}. Remove the interval [x,y]={z⊆y|x⊆z} from the Boolean lattice ...
AbstractNew properties that involve matchings, cutsets, or skipless chain partitions in graded poset...
AbstractConsider the posetΠnof partitions of ann-element set, ordered by refinement. The sizes of th...
AbstractLet F be a Sperner family of subsets of {1,…,m}. Bollobás showed that if A ∈ F ⇒ A = {1,…,m}...
AbstractThe objectives of this paper are three-fold. First, we would like to call attention to a ver...
The objectives of this paper are three-fold. First, we would like to call attention to a very attrac...
AbstractA procedure for partitioning the collection of divisors of an integer into symmetric chains ...
AbstractWe study the posets (partially ordered sets) Pn of partitions of an integer n, ordered by re...
AbstractAn old conjecture of Stanley's is confirmed, namely that the lattice of bounded column stric...
AbstractA procedure for partitioning the collection of divisors of an integer into symmetric chains ...
AbstractA ranked poset P has the Sperner property if the sizes of the largest rank and of the larges...
A procedure for partitioning the collection of divisors of an integer into symmetric chains is descr...
AbstractA subset A of a poset P is a q-antichain if it can be obtained as the union of at most q ant...
AbstractIf P is a partially ordered set, a k-family of P is a subset which contains no chains of len...
AbstractMotivated by the problem of estimating the age (in generations) of a population that evolves...
AbstractConsider any sets x⊆y⊆{1,…,n}. Remove the interval [x,y]={z⊆y|x⊆z} from the Boolean lattice ...
AbstractNew properties that involve matchings, cutsets, or skipless chain partitions in graded poset...
AbstractConsider the posetΠnof partitions of ann-element set, ordered by refinement. The sizes of th...
AbstractLet F be a Sperner family of subsets of {1,…,m}. Bollobás showed that if A ∈ F ⇒ A = {1,…,m}...