Contractions to k8
Contractions to k8
复制标题
收缩到 k8
DOI:
--
复制
发表时间:
1994
影响因子:
0.9
通讯作者:
L. K. Jørgensen
中科院分区:
文献类型:
--
作者:
L. K. Jørgensen
It is proved that the maximal number of edges in a graph with n ≧ 8 vertices that is not contractible to K8 is 6n − 21, unless 5 divides n, and the only graphs with n = 5m vertices and more than 6n − 21 edges that are not contractible to K8 are the K5(2)-cockades that have exactly 6n − 20 edges.