a) Consider the set X = {1,2,3} with the topology t= (0,X, (1). (2, 3}. (1, 2, 3} }. Show that (X,r) is a topological space. b) Prove that if X is a topological space, then the union of any finite collection of closed sets is closed.

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A: the collection of all close subsets of R is called the topology of R

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A: Topology Question

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Q: the collection of all close subsets of R is called the topology of R ylgn İhi

A: False

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