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math.CO2021
Combinatorics of the symmetries of ascents in restricted inversion sequences
Joanna N. Chen, Zhicong Lin
The systematic study of inversion sequences avoiding triples of relations was initiated by Martinez and Savage. For a triple , they in…
math.CO2021
Block decomposition and statistics arising from permutation tableaux
Joanna N. Chen
Permutation statistics $\wnm$ and $\rlm$ are both arising from permutation tableaux. $\wnm$ was introduced by Chen and Zhou, which was proved equally distributed with the number of…
math.CO2021
Statistics on permutations with bounded drop size
Joanna Na Chen, Robin Dapao Zhou
Permutations with bounded drop size, which we also call bounded permutations, was introduced by Chung, Claesson, Dukes and Graham. Petersen introduced a new Mahonian statistic the…