How do you find an acceptable balance between closeness and distance in a relationship?

在人际关系中，你怎样在亲密与疏离之间找到恰当平衡？

In this paper, we show that the Pseudo-Symmetric property of spherical point set can be characterized by the eigen values of eigenpolynomial and it has the closeness under the metric sum operation.

本文证明了球面有限点集称性可以完全由其特征多项式根来刻画，并得到了在度量加运算下称性具有封闭性.