Question: Exercise 2 . 7 . Let ( x , T ) be a topological space and Gsubex. Show that G is open in x if

Exercise 2.7. Let (x,T) be a topological space and Gsubex. Show that G is open in x if and only if ?bar(G(?bar(A)))?b=ar(GA), for every Asubx.
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Exercise 2.7. Let (x,T) be a topological space and Gsubex. Show

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