曼城又签进西尔瓦和科拉·罗夫，利物浦签了科尔，纽卡签了哥斯林。

Manchester City snap up David Silva and Aleksandr Kolarov while Liverpool sign Joe Cole and Dan Gosling joins Newcastle United.

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本文对离散型f—随机变量给出了一种严格的数学定义，由此引出了F—马尔可夫链，并证明了切普曼—哥尔莫哥洛夫方程仍成立。

This paper gives a strict mathematical definition for discrete's mode of f-random variable. It follows f-markovian chain and pro ves that the equation of chapman-holds.

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