一类非零元个数最少的谱任意Ray 模式
A family of spectrally arbitrary Ray patterns with the minimum number of nonzeros

针对谱任意问题的研究情况，找到了一个新的非零元个数最少的谱任意Ray模式矩阵，并且用幂零-中心化方法证明了该Ray模式矩阵是谱任意的.
Considering on spectrally arbitrary problem，we find a new spectrally arbitrary Ray pattern with the minimum number of nonzeros in this paper. And the Ray pattern is proved to be spectrally arbitrary by using the nilpotent-centralizer method