在测度论中,计数测度是可以定义在任意集合上的测度,它将每个集合含有的元素个数作为这个集合的测度。准确来说,对于任何一个可测空间,我们都可以定义这个可测空间上的测度,使得对于任意可测集,就是集合中含有的元素个数,即
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