Guofei Zhou

activity

20062015

most citedOn k-hypertournament losing scores

8 citations · 8 across the 5 of their papers we have counts for

collaborators

Showing 2015Show all

2 papers · 1 filter

math.CO2015

Constructing a Family of 4-Critical Planar Graphs with High Edge-Density

Yao Tianxing, Zhou Guofei

A graph $G = (V, E)$ is a $k$ -critical graph if $G$ is not $(k - 1)$ -colorable but $G - e$ is $(k - 1)$ -colorable for every $e \in E (G)$ . In this paper, we construct a family of 4-critical…

math.CO2015

Some New Methods for Constructing 4-critical Planar Graphs

Guofei Zhou

A graph $G$ is said to be $k$ -critical if $G$ is $k$ -colorable and $G - e$ is not $k$ -colorable for every edge $e$ of $G$ . In this paper, we present some new methods from two or more…