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Pablo Sanchez Ocal

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Pablo Sanchez Ocal
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  • Daniel@30: A typical way to prove \(A = \cup_{p\in P}{A_p} \) is by double inclusion. Since \(A_p\) are all subsets of \(A\) one inclusion is clear. For the other, suppose there is an \(a\in A\) and \(a\not\in\cup_{p\in P}{A_p} \), what can be said …