Below {Aa}a€I denotes a family of sets. Prove the following statements. (De Morgan's Law) (U4.) = N 45, (N4.)" = U As- %3| aɛI

Q: Let's compare the cardinalities of N and I.

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Q: Below {Aa}ae1 denotes a family of sets. Prove the following statements. • (De Morgan's Law) (UA.) =N…

A:

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A: (i). Let  S = { ..., -5, - 4, - 3, - 2, - 1 }

Q: let A Set bounded belou, erove that C. inf A Inf C A ン

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Q: 5. Deduce from (4) that the set {2} 2-: n = 1, 2, 3, ... is closed in R.

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