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math.CO2021
The interval posets of permutations seen from the decomposition tree perspective
Mathilde Bouvel, Lapo Cioni, Benjamin Izart
The interval poset of a permutation is the set of intervals of a permutation, ordered with respect to inclusion. It has been introduced and studied recently in [B. Tenner, arXiv:20…
math.CO2021
Preimages under the Queuesort algorithm
Lapo Cioni, Luca Ferrari
Following the footprints of what have been done with the algorithm Stacksort, we investigate the preimages of the map associated with a slightly less well known algorithm, called Q…