摘要 : <正> I. INTRODUCTION Graphical enumeration plays an important role in graph theory. F. Harary, W. Palmer, C. Y. Chao, and J, G. Wells have used the classical enumeration theorem of Polya and the generalization of de-Bruijn to solv... 展开 <正> I. INTRODUCTION Graphical enumeration plays an important role in graph theory. F. Harary, W. Palmer, C. Y. Chao, and J, G. Wells have used the classical enumeration theorem of Polya and the generalization of de-Bruijn to solve numerous problems of graphical enumeration. In our country Zhong Ji and Liu Bolian have also ob- 收起