In this paper, Euler's formula and Handshaking lemma is used to obtain the face chromatic number 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。
Besides, it concretely analysized the calculation of face chromatic number of plan view on the surface of the sphere and the ring, and promoted the application of equations.
具体分析了球面和环面上平面图面色数的计算,并将方程组的应用进行推广。
Besides, it concretely analysized the calculation of face chromatic number of plan view on the surface of the sphere and the ring, and promoted the application of equations.
具体分析了球面和环面上平面图面色数的计算,并将方程组的应用进行推广。
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