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is Continous iff f (Ā) is subset closure of f(A) pdf

X and Y are metric spaces, is Continous iff f (Ā) is subset closure of f(A)

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https://omgmaths.com/wp-content/uploads/2021/03/F-Is-Continous-Iff-FA-Is-Subset-Of-Closure-Of-FA-Pdf.pdf