H. Lei

activity

20172026

most citedTotal rainbow connection of digraphs

23 citations · 56 across the 19 of their papers we have counts for

collaborators

Showing 2021Show all

2 papers · 1 filter

math.CO2021

On critical graphs for the chromatic edge-stability number

Hui Lei, Xiaopan Lian, Xianhao Meng +2

The {\em chromatic edge-stability number} $e s_{χ} (G)$ of a graph $G$ is the minimum number of edges whose removal results in a spanning subgraph with the chromatic number smaller tha…

math.CO2021

A characterization of 4- $χ_{S}$ -vertex-critical graphs for packing sequences with $s_{1} = 1$ and $s_{2} \geq 3$

Sandi Klavžar, Hui Lei, Xiaopan Lian +1

If $S = (s_{1}, s_{2}, \dots)$ is a non-decreasing sequence of positive integers, then the $S$ -packing $k$ -coloring of a graph $G$ is a mapping $c : V (G) \to [k]$ such that if $c(u)=…

On critical graphs for the chromatic edge-stability number

A characterization of 4-χS​-vertex-critical graphs for packing sequences with s1​=1 and s2​≥3

A characterization of 4- $χ_{S}$ -vertex-critical graphs for packing sequences with $s_{1} = 1$ and $s_{2} \geq 3$