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{{Probability distribution
{{Probability distribution
In probability theory and statistics, the Poisson distribution (; ), named after French mathematician Siméon Denis Poisson, is a discrete probability distribution that expresses the probability of a given number of events occurring in a fixed interval of time or space if these events occur with a known constant mean rate and independently of the time since the last event. The Poisson distribution can also be used for the number of events in other specified intervals such as distance, area or volume.
In probability theory and statistics, the Poisson distribution (; ), named after French mathematician Siméon Denis Poisson, is a discrete probability distribution that expresses the probability of a given number of events occurring in a fixed interval of time or space if these events occur with a known constant mean rate and independently of the time since the last event. The Poisson distribution can also be used for the number of events in other specified intervals such as distance, area or volume.
在概率论和统计学中，泊松分佈是以法国数学家西莫恩·德尼·泊松命名的，是一个离散的概率分布，它表示在一个固定的时间段或空间中发生的一定数量的事件的概率，这些事件以一个已知的常数发生，并且独立于自上一个事件以来的时间。泊松分佈还可以用来表示其他特定间隔的事件数量，如距离、面积或体积。
在因果集合论中，时空的离散元素在卷中遵循一个泊松分佈。
在因果集合论中，时空的离散元素在卷中遵循一个泊松分佈。
==Computational methods==
==Computational methods==