Question: Let X be an infinite set and u the counting measure on the o-algebra A = P(X). Show that there exists a decreasing sequence

Let X be an infinite set and u the counting measure on

Let X be an infinite set and u the counting measure on the o-algebra A = P(X). Show that there exists a decreasing sequence (En)neN in A such that lim E, with lim (En) 0. 12-0 811x

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