Yi Su

collaborators

2 papers

math.CO2026

Average degrees of edge- $Δ$ -critical multigraphs

Guantao Chen, Yuying Ma, Yimo Su +1

Let $G$ be a loopless multigraph with maximum degree $Δ (G)$ , average degree $d (G)$ , density $Γ (G)$ , and chromatic index $χ^{'} (G)$ . A multigraph $G$ is called edge- $Δ$ -crit…

math.CO2025

Bipartite graphs with the double Hall property

Guantao Chen, Mikhail Lavrov, Yuying Ma +2

The super-neighborhood of a vertex set $A$ in a graph $G$ , denoted by $Λ^{2} (A)$ , is the set of vertices adjacent to at least two vertices in $A$ . We say that a bipartite graph $G=(X…

Average degrees of edge-Δ-critical multigraphs

Bipartite graphs with the double Hall property

Average degrees of edge- $Δ$ -critical multigraphs