AbstractThe absolute value of the Möbius function of a bounded poset P with n + 2 elements satisfies This bound is sharp. The posets achieving it are classified. The same problem is solved for graded posets of given rank and attacked for finite lattices
We study r-differential posets, a class of combinatorial objects introduced in 1988 by the first aut...
We study r-differential posets, a class of combinatorial objects introduced in 1988 by the first aut...
We study the class of lattices generated by a family of intervals in a linear order. The results are...
AbstractThe absolute value of the Möbius function of a bounded poset P with n + 2 elements satisfies...
AbstractWe study extremal problems concerning the Möbius function μ of certain families of subsets f...
AbstractWe study extremal problems concerning the Möbius function μ of certain families of subsets f...
AbstractWe introduce the concept of a bounded below set in a lattice. This can be used to give a gen...
Abstract. We consider the poset of all posets on n elements where the partial order is that of inclu...
AbstractWe consider the poset of all posets on n elements where the partial order is that of inclusi...
Let F be a family of subsets of an n-set, considered as a subposet of the Boolean algebra B.. Adjoin...
AbstractA partially ordered set is r-thick if every nonempty open interval contains at least r eleme...
We study the class of lattices generated by a family of intervals in a linear order. The results are...
We present a two term formula for the Möbius function of intervals in the poset of all permutations,...
Abstract. In this paper, we investigate the Möbius function µS associated to a (locally finite) pos...
We study r-differential posets, a class of combinatorial objects introduced in 1988 by the first aut...
We study r-differential posets, a class of combinatorial objects introduced in 1988 by the first aut...
We study r-differential posets, a class of combinatorial objects introduced in 1988 by the first aut...
We study the class of lattices generated by a family of intervals in a linear order. The results are...
AbstractThe absolute value of the Möbius function of a bounded poset P with n + 2 elements satisfies...
AbstractWe study extremal problems concerning the Möbius function μ of certain families of subsets f...
AbstractWe study extremal problems concerning the Möbius function μ of certain families of subsets f...
AbstractWe introduce the concept of a bounded below set in a lattice. This can be used to give a gen...
Abstract. We consider the poset of all posets on n elements where the partial order is that of inclu...
AbstractWe consider the poset of all posets on n elements where the partial order is that of inclusi...
Let F be a family of subsets of an n-set, considered as a subposet of the Boolean algebra B.. Adjoin...
AbstractA partially ordered set is r-thick if every nonempty open interval contains at least r eleme...
We study the class of lattices generated by a family of intervals in a linear order. The results are...
We present a two term formula for the Möbius function of intervals in the poset of all permutations,...
Abstract. In this paper, we investigate the Möbius function µS associated to a (locally finite) pos...
We study r-differential posets, a class of combinatorial objects introduced in 1988 by the first aut...
We study r-differential posets, a class of combinatorial objects introduced in 1988 by the first aut...
We study r-differential posets, a class of combinatorial objects introduced in 1988 by the first aut...
We study the class of lattices generated by a family of intervals in a linear order. The results are...
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