• anonymous
5. Suppose F is a nonempty family of sets. Let I = ∪F and J = ∩F. Suppose also that J ≠ Ø , and notice that it follows that for every X ∈ F, X ≠ Ø , and also that I ≠ Ø. Finally, suppose that {A i | i ∈ I } is an indexed family of sets. (a) Prove that ∪ i∈I A i = ∪ X ∈F (∪ i∈X A i ).
Mathematics
• Stacey Warren - Expert brainly.com
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SOLVED
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