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In: Advanced Math

"•“"Suppose ℱ, ?1, and ?2 are nonempty families of sets. Prove that if ℱ ⊆ ?1...

"•“"Suppose ℱ, ?1, and ?2 are nonempty families of sets. Prove that if ℱ ⊆ ?1 ∩ ?2, then ∩?1 ∪ ∩?2 ⊆ ∩ℱ.“"

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