相关期刊:《Acta Mathematicae Applicatae Sinica》《World Journal of Engineering and Technology》《Acta Mathematica Sinica,English Series》《Wuhan University Journal of Natural Sciences》更多>>
supported by Hunan Education Department Foundation(No.18A382)。
An edge-colored graph G is conflict-free connected if any two of its vertices are connected by a path,which contains a color used on exactly one of its edges.The conflict-free connection number of a connected graph G,...
Supported by the National Natural Science Foundation of China under Grant No.11501050;the Fundamental Research Funds for the Central Universities under Grant No.310812151003
A strong k-edge-coloring of a graph G is an assignment of k colors to the edges of G in such a way that any two edges meeting at a common vertex, or being adjacent to the same edge of G, axe assigned different colors....
In this paper, the authors have obtained some lower bounds on the size of a 7-critical graph,and some results about the planar graph conjecture have been given.