In this paper, Euler's formula and Handshaking lemma is used to obtain the facechromaticnumber of a planar graph by solving equations.
本文在前人研究的面着色问题基础上,运用欧拉公式和握手定理通过解方程组得到连通平面图的面色数。
2
Besides, it concretely analysized the calculation of facechromaticnumber of plan view on the surface of the sphere and the ring, and promoted the application of equations.