24 citations · 93 across the 24 of their papers we have counts for
10 papers · 1 filter
Words restricted by 3-letter generalized multipermutation patterns
Alexander Burstein, Toufik Mansour
We find exact formulas and/or generating functions for the number of words avoiding 3-letter generalized multipermutation patterns and find which of them are equally avoided.
Coloured permutations containing and avoiding certain patterns
T. Mansour
Following Mansour, let be the set of all coloured permutations on the symbols with colours , which is the analogous of the symmetric group when r…
Continued fractions, statistics, and generalized patterns
T. Mansour
Recently, Babson and Steingrimsson (see \cite{BS}) introduced generalized permutations patterns that allow the requirement that two adjacent letters in a pattern must be adjacent i…
Continued fractions and generalized patterns
T. Mansour
In [BS] Babson and Steingrimsson introduced generalized permutation patterns that allow the requirement that two adjacent letters in a pattern must be adjacent in the permutation.…
Words restricted by patterns with at most 2 distinct letters
Alexander Burstein, Toufik Mansour
We find generating functions for the number of words avoiding certain patterns or sets of patterns on at most 2 distinct letters and determine which of them are equally avoided. We…
restricted 1-3-2 permutations and generalized patterns
T. Mansour
Recently, Babson and Steingrimsson (see [BS]) introduced generalized permutations patterns that allow the requirement that two adjacent letters in a pattern must be adjacent in the…