Zhen Chen

collaborators

2 papers

math.CO2026

Extremal eigenvalues of combinatorial Hodge Laplacians

Zhen Chen, Suil O, Jianfeng Wang

For a finite simplicial complex on $[n]$ , the combinatorial Hodge Laplacian splits as $L_{k} = L_{k}^{up} + L_{k}^{down}$ , and Duval and Reiner showed that $λ_{\max}(L_k^{\…

math.CO2023

On the divisibility of H-shape trees and their spectral determination

Zhen Chen, Jianfeng Wang, Maurizio Brunetti +1

A graph $G$ is divisible by a graph $H$ if the characteristic polynomial of $G$ is divisible by that of $H$ . In this paper, a necessary and sufficient condition for recursive graph…