Kuo Zhang

collaborators

2 papers

math.CO2026

Orthogonal degree-similarity of edge-deleted strongly regular graphs

Yi-Zheng Fan, Wei Wang, Kuo Zhang

Godsil and Sun asked whether, for a strongly regular graph $X$ and any two different edges $e$ and $f$ , the edge-deleted graphs $X ∖ e$ and $X ∖ f$ are degree-similar…

math.CO2026

Smith normal forms for coalescences at cospectral vertices

Yi-Zheng Fan, Kuo Zhang, Wei Wang

Let $L_{I^} ¼ (G) = A (G) - I^¼ D (G)$ be the generalized $I^¼$ -adjacency matrix of a finite graph $G$ . Fan, Xing, Zhang, and Wang constructed pairs of non-degree-similar trees for which the Smi…