一个图G的亏格分布,可用亏格多项式的形式表征.利用加边法求得两类图的亏格分布——梯图(已知,但这里的求取过程较简单)与蜻蜓眼图(新的).
The genus distribution of a graph G is denoted by its genus polynomial, In this paper, by the help of edgeattaching surgery technique, we get the genus distribution of two infinite classes of graphs-closed-end ladders and dragonfly eyes.