Huu An Phan

collaborators

2 papers

math.CO2025

Characteristic polynomials of ${\pm 1}$ -matrices modulo a power of $2$

Gary Greaves, Huu An Phan

For a fixed integer $e ⩾ 3$ and $n$ large enough, we show that the number of congruence classes modulo $2^{e}$ of characteristic polynomials of $n \times n$ symmetric $\{\pm…

math.CO2025

A Note on Reconfiguration Graphs of Cliques

Quan N. Lam, Huu An Phan, Duc A. Hoang

In a reconfiguration setting, each clique of a graph $G$ is viewed as a set of tokens placed on vertices of $G$ such that no vertex has more than one token and any two tokens are a…

Characteristic polynomials of {±1}-matrices modulo a power of 2

A Note on Reconfiguration Graphs of Cliques

Characteristic polynomials of ${\pm 1}$ -matrices modulo a power of $2$