【摘要】 A表示删除2度点后的点导出子图是空图的图形,文章的结论:A不是cordial图的充要条件是A是偶度图且e(A)=4m+2.更多还原

【Abstract】 A graph that the induced subgraph by deleting the vertice-set whose degree is 2 is empty,is denoted by A.A is not cordial if and only if the degree of all vertices is even and e(A)=4m+2.更多还原