36 citations · 63 across the 18 of their papers we have counts for
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math.CO2007
The -class and almost-increasing permutations
Sergi Elizalde
In this paper we give a bijection between the class of permutations that can be drawn on an X-shape and a certain set of permutations that appears in [Knuth] in connection to sorti…
math.CO2007
Generating trees for permutations avoiding generalized patterns
Sergi Elizalde
We construct generating trees with one, two, and three labels for some classes of permutations avoiding generalized patterns of length 3 and 4. These trees are built by adding at e…
math.DS2007
Forbidden patterns and shift systems
José M. Amigó, Sergi Elizalde, Matthew B. Kennel
The scope of this paper is two-fold. First, to present to the researchers in combinatorics an interesting implementation of permutations avoiding generalized patterns in the framew…