The almost sure central limit theorem and self-normalized limit theory have become two important fields of the study of probability limit theory in recent decades.
而对几乎处处极限定理和自赋范极限理论的研究则是近几十年来概率极限理论研究中的两个重要方向。
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It is the positive feedback trading and self-reinforcing mechanism, which enforced the expectations normalized speed and degree. So the liquidity black hole appears.