2 papers
math.CO2025
Pattern avoidance in revised ascent sequences
Robin D. P. Zhou
Inspired by the definition of modified ascent sequences, we introduce a new class of integer sequences called revised ascent sequences. These sequences are defined as Cayley permut…
math.CO2024
On the enumeration of permutations avoiding chains of patterns
Robin D. P. Zhou, Yongchun Zang
In 2019, Bóna and Smith introduced the notion of strong pattern avoidance, saying that a permutation strongly avoids a pattern if and both avoid . Recently, Ar…