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的平衡？

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的伪对称性可以完全由其特征多项式的根来刻画，并得到了在度量加运算下伪对称性具有封闭性.