给出了度量平均点集为—伪对称集的一类充分必要条件。
A class of sufficient and necessary conditions for a metric average point set are put forward as a pseudo—symmetric set.
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。
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.
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