本文给出在离散情形下回复弱混合算子的定义，并给出两个算子的积是弱混合的一个充分条件。
In this paper, we give the definition of the recurrently weak-mixing operators in the discrete case, and obtain a sufficient condition under which the product of two operators is weak-mixing.
讨论平均跟踪性与完全传递、拓扑弱混合及混沌的关系。
Relations among the average-shadowing property, totally transitive, topologically weakly mixing and chaos were discussed.
针对语音信号的弱稀疏性，提出一种新的基于混合矩阵估计的欠定语音盲分离方法。
This paper proposes a new method based on mixing matrix estimation for underdetermined blind speech separation, aiming at speech signals under weak sparseness.
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