Triple construction of semilattices with admitting neutral -closure operators
Two analogues of a classical sequence.
Two closure operators which preserve m-compacticity
Two constructions of compatible relations
Two new criteria for comparison in the Bruhat order.
Two Poset Polytopes.
Two results on a partial ordering of finite sequences
In the first part of the paper we are concerned about finite sequences (over arbitrary symbols) for which . The function measures the maximum length of finite sequences over symbols which contain no subsequence of the type . It follows from the result of Hart and Sharir that the containment is a (minimal) obstacle to . We show by means of a construction due to Sharir and Wiernik that there is another obstacle to the linear growth. In the second part of the paper we investigate whether...
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