For each natural number n, let A (subscript n) = (x in the real #'s such that n-1 < x < n) Prove that {A (subscript n) with n as an element of the natural numbers) is a pairwise disjoint family of sets and that the Union of (n in the natural numbers<-(below Union symbol)) of An <- (next to Union symbol) = (Positive real numbers - Natural Numbers)
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