四度图的异构类快速算法(Ⅰ):A型域与简单B型域的情形

The quick arithmetic for the isomeric types of the graphs in degree four(Ⅰ): for the cases of form A and simple form B

根据四度图 G(4)的顶点数δ(i)的偏导数规律 ,得到快速写出 G(4)的全部异构类的算法。解决了 A型域和简单的 B型域的情形。

In this paper, we obtain the quick arithmetic of writing out all the isomeric types of the graphs in degree four on the basic of the laws of the partial derivatives of the vertices δ(i) in G (4),the graphs in degree four. At first, we would solve the cases of the form A and the simple form B , the rest (the complex Form B and the Form C ) would be discussed in next paper.