Jerry Zhang

activity

20182026

collaborators

4 papers

math.CO2026

Asymptotics of the Average Stack-Sorting Depth

Jerry Zhang

Let $D_{n}$ denote the average number of passes of the stack-sorting map $s$ required to sort a permutation in $S_{n}$ . We use the recently introduced framework of stack-sort…

math.CO2026

Polynomial Time Enumeration of t-Stack-Sortable Permutations Ending in Their Least Entry

Jerry Zhang

We study the behavior of West's stack-sorting map $s$ on permutations whose last entry is also their least. Let $S_{n}^{'} := {π 0 ∣ π \in S_{n}}$ where $π 0$ denotes the concatenati…

math.CA2020

Geometry of limits of zeros of polynomial sequences of type $(1, 2)$

David G. L. Wang, Jerry J. R. Zhang

We study the root distribution of some univariate polynomials satisfying a recurrence of order two with linear and quadratic polynomial coefficients. We show that the set of non-is…

math.CV2018

Geometry of limits of zeros of polynomial sequences of type $(1, 1)$

David G. L. Wang, Jerry J. R. Zhang

In this paper, we study the root distribution of some univariate polynomials satisfying a recurrence of order two with linear polynomial coefficients. We show that the set of non-i…

Asymptotics of the Average Stack-Sorting Depth

Polynomial Time Enumeration of t-Stack-Sortable Permutations Ending in Their Least Entry

Geometry of limits of zeros of polynomial sequences of type (1,2)

Geometry of limits of zeros of polynomial sequences of type (1,1)

Geometry of limits of zeros of polynomial sequences of type $(1, 2)$

Geometry of limits of zeros of polynomial sequences of type $(1, 1)$