Question: Problem 4 (1) Prove that if X is normal and U C X is an open neighbourhood of a closed set there exists an open

Problem 4 (1) Prove that if X is normal and U C X is an open neighbourhood of a closed set there exists an open set V C U such that o ' gcyeveun (2) Suppose there O{(iStS a closed continuous surjective map X Y. Show that if X is normal, then Y is also normal

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