n. 单纯的,单一的( simplex的名词复数 )
网络 简单的观念
Sperner´s lemma concerns the decomposition of a simplex into smaller simplices.
斯波纳引理涉及到把一个单纯形分解为较小的单纯形的问题。
Let G be a graph and let V(G) be the vertex set of G. Define the neighborhood complex N(G) as the simplicial complex whose simplices are those subsets of V(G) which have a common neighbor.
一个图G的邻域复形是以G的顶点为顶点,以G的具有公共邻接顶点的顶点子集为单形的抽象复形。