Question: 1) Let X be any non-empty set and ro e X. a) Prove that T= (X}U {AC X : 10 $ A ) is a

1) Let X be any non-empty set and ro e X. a) Prove that T= (X}U {AC X : 10 $ A ) is a topology on X. b) What is the closure in (X, r) of any subset A of X

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