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Solution for QID #13469: Given, S and T are sets of real numbers.Prove that S is clos | StudyHelpMe

Subject: Math
Status: Made to Order
Given, S and T are sets of real numbers.Prove that S is closed iff  S is the complement set of some set open set T. Prove by giving detailed explanation by using the formal definition only: T is open set if for all elements of T, say x, there exist some delta(>0), s.t. (x-delta,x+delta) belongs to T, ( note that delta may depend on that element, x)
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