Let A, B are closed subsets in topological space (X,t), then اختر احدى الاجابات BA(ANB) = ANB Bd(ANB) = AUB Bd(ANB) SANB

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Let A, B are closed subsets in topological space (X,t), then اختر احدى الاجابات BA(ANB) = ANB Bd(ANB) = AUB Bd(ANB) SANB Bd(ANB) CB(A) n Bd(B)
Which of the following is not a topology on a set X= {a,b,c): اختر احدى الدجابات {X, 9. {a}, {b}, {a,b}} {X, 9. {C}} {X) {X {b}, {c}}
Let (R.Tu) be the usual topology on a If A=Z. Then the subspace topology(relative topology) On Zis: اختر احدي الدجابات Icof Tdis Tind
One of the following is open set in the right ray topology The set of natural numbers N (150, n(-0, 375) The set of integer numbers (150.)n(375.)
WHICH OF THE FOLLOWING SENTENCE IS NOT TRUE: Any open interval is homeomorphic to (0, 1). The composition of two continuous functions is continuous. The function f:X → Y such that f(x) = x2 is a continuous function. The function f:X Y such that f(x) = x2 is open x2 is open function