一类图关于Merrifield-Simmons指标和Hosoya指标的排序

Merrifield-Simmons index and Hosoya index are the two valuable topological indices in chemical graph theory．The Merrifield-Simmons index of a graph is defined as the total number of the independent sets of the graph and the Hosoya index of a graph is defined as the total number of the matchings of the graph．In this paper，the Merrifield-Simmons index and Hosoya index of the class of graphs are investigated，according to the distance between and on，their orderings with respect to these two indices are obtained．