2 papers
math.CO2026
Involution on Catalan structures
Anders Claesson, Sergey Kitaev, Einar SteingrÃmsson +1
We define an involution on Catalan structures through an abstract framework, prove an equidistribution theorem for four canonical statistics and present a generating function c…
math.CO2025
Proof of a conjecture on the shape-Wilf-equivalence for partially ordered patterns
Lintong Wang, Sherry H. F. Yan
A partially ordered pattern (abbreviated POP) is a partially ordered set (poset) that generalizes the notion of a pattern when we are not concerned with the relative order of some…