Ligong Wang

collaborators

2 papers

math.CO2024

A sharp upper bound on the spectral radius of $I^¸ (1, 3, 3)$ -free graphs with given size

Yuxiang Liu, Ligong Wang

A graph $G$ is $F$ -free if $G$ does not contain $F$ as a subgraph. Let $I ¨ (G)$ be the spectral radius of a graph $G$ . Let $I^¸ (1, p, q)$ denote the theta graph, which is obtained by c…

math.CO2024

Connected TurÃ¡n numbers for Berge paths in hypergraphs

Lin-Peng Zhang, Hajo Broersma, Ervin GyÅri +2

Let $F$ be a family of $r$ -uniform hypergraphs. Denote by $\ex^{\mathrm{conn}}_r(n,\mathcal{F})$ the maximum number of hyperedges in an $n$ -vertex connected $r$ -uniform h…

A sharp upper bound on the spectral radius of I^¸(1,3,3)-free graphs with given size

Connected TurÃ¡n numbers for Berge paths in hypergraphs

A sharp upper bound on the spectral radius of $I^¸ (1, 3, 3)$ -free graphs with given size