Shuang Li

collaborators

2 papers

math.CO2023

On the (non-)existence of tight distance-regular graphs: a local approach

Jack H. Koolen, Jae-Ho Lee, Shuang-Dong Li +3

Let $Γ$ denote a distance-regular graph with diameter $D \geq 3$ . Jurišić and Vidali conjectured that if $Γ$ is tight with classical parameters $(D, b, α, β)$ , $b \geq 2$ , then $Γ$ is n…

math.CO2023

On Fan's conjecture about $4$ -flow

Deping Song, Shuang Li, Xiao Wang

Let $G$ be a bridgeless graph, $C$ is a circuit of $G$ . Fan proposed a conjecture that if $G / C$ admits a nowhere-zero 4-flow, then $G$ admits a 4-flow $(D, f)$ such that $E(G)-E(C)\…

On the (non-)existence of tight distance-regular graphs: a local approach

On Fan's conjecture about 4-flow

On Fan's conjecture about $4$ -flow