Zhicong Lin

activity

20232026

most citedParity statistics on restricted permutations and the Catalan--Schett polynomials

1 citations · 1 across the 8 of their papers we have counts for

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3 papers · 1 filter

math.CO2025

A bijection between $321$ - and $213$ -avoiding permutations preserving $t$ -stack-sortability

Yang Li, Sergey Kitaev, Zhicong Lin +1

We construct a bijection between $321$ - and $213$ -avoiding permutations that preserves the property of $t$ -stack-sortability. Our bijection transforms natural statistics between th…

math.CO2025

Bijections in weakly increasing trees via binary trees

Yang Li, Zhicong Lin

As a unification of increasing trees and plane trees, the weakly increasing trees labeled by a multiset was introduced by Lin-Ma-Ma-Zhou in 2021. Motived by some symmetries in plan…

math.CO2025

Combinatorics on bi- $γ$ -positivity of $1/ k$ -Eulerian polynomials

Sherry H. F. Yan, Xubo Yang, Zhicong Lin

The $1/ k$ -Eulerian polynomials $A_{n}^{(k)} (x)$ were introduced as ascent polynomials over $k$ -inversion sequences by Savage and Viswanathan. The bi- $γ$ -positivity of the $1/ k$ -Eul…

A bijection between 321- and 213-avoiding permutations preserving t-stack-sortability

Bijections in weakly increasing trees via binary trees

Combinatorics on bi-γ-positivity of 1/k-Eulerian polynomials

A bijection between $321$ - and $213$ -avoiding permutations preserving $t$ -stack-sortability

Combinatorics on bi- $γ$ -positivity of $1/ k$ -Eulerian polynomials