Jiachang Ye

collaborators

4 papers

math.CO2025

Signless Laplacian characterization of cones over disjoint unions of cycles, edges and isolated vertices

Jiachang Ye, Jianguo Qian, Zoran Stanic

Two graphs are said to be $Q$ -cospectral if they share the same signless Laplacian spectrum. A simple graph is said to be determined by its signless Laplacian spectrum (abbreviated…

math.CO2025

Signless Laplacian spectral analysis of a class of graph joins

Jiachang Ye, Zoran StaniÄ, Jianguo Qian

A graph is said to be determined by its signless Laplacian spectrum (abbreviated as DQS) if no other non-isomorphic graph shares the same signless Laplacian spectrum. In this paper…

math.CO2025

Determining some graph joins by the signless Laplacian spectrum

Jiachang Ye, Jianguo Qian, Zoran StaniÄ

A graph is determined by its signless Laplacian spectrum if there is no other non-isomorphic graph sharing the same signless Laplacian spectrum. Let $C_{l}$ , $P_{l}$ , $K_{l}$ and $K_{s,l…

math.CO2024

Which $L$ -cospectral graphs have same degree sequences

Jiachang Ye

Let $I^»_{i} (G)$ be the $i$ -th largest Laplacian eigenvalues of graph $G$ , where $1 \leq i \leq ∣ V (G) ∣$ . Liu, Yuan, You and Chen [Discrete Math., 341 (2018) 2969--2976] raised the probl…

Signless Laplacian characterization of cones over disjoint unions of cycles, edges and isolated vertices

Signless Laplacian spectral analysis of a class of graph joins

Determining some graph joins by the signless Laplacian spectrum

Which L-cospectral graphs have same degree sequences

Which $L$ -cospectral graphs have same degree sequences