与5-树二次整子图色多项式前三高次项系数都相同的第三类图

THIRD CLASS OF GRAPHS ITS COEFFICIENTS OF FIRST THREE HIGH DEGREE ITEMS OF CHROMATIC POLYNOMIAL ARE EQUAL TO THAT OF TWO-DEGREE INTEGRAL SUBGRAPHS OF A Q-TREE

本文给出了与5-树二次整子图色多项式前三高次项系数都相同的第三类图,从而说明了与5-树二次整子图色分划数、顶点数、边数和三角形数都相同的图,除它本身和加点5-树外,还有别的图.

In this paper we give out third class of graphs, its coefficients of first three high degree items of chromatic polynomial are equal to that of two-degree integral subgraphs of a q-tree.