By using random matrix theory we find that the distribution of eigenvalues of correlation matrix of relative return also follows a power-law.
利用随机矩阵理论我们发现相对收益的关联矩阵的特征值分布也具有幂律的特征。
In this paper, we study the symmetry on distribution matrix of order statistic of discrete type random variable.
本文研究了离散型随机变量次序统计量的分布矩阵的对称性，获得了二个定理。
In this paper, we study the symmetry on distribution matrix of order statistic of discrete type random variable. Therefore, we obtain two theorems.
本文研究了离散型随机变量次序统计量的分布矩阵的对称性，获得了二个定理。
Making use of the joint distribution matrix of discrete random variables, we get a kind of judgement method about the independence of discrete random variables, give its application by example.
利用离散型随机变量的联合分布矩阵，得到了离散型随机变量独立性的一种判别方法，并用实例给出了一定的应用。
Making use of the joint distribution matrix of discrete random variables, we get a kind of judgement method about the independence of discrete random variables, give its application by example.
利用离散型随机变量的联合分布矩阵，得到了离散型随机变量独立性的一种判别方法，并用实例给出了一定的应用。
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