If [tex]A \subset X[/tex] where [tex]X[/tex] has a topology, is it generally true that the interior of [tex]A[/tex] is equal to the interior of the closure of [tex]A[/tex]? This seems very reasonable to me, but probably only because I'm visualizing [tex]A[/tex] as a disc in the real plane. If it isn't true, what would be a counterexample?(adsbygoogle = window.adsbygoogle || []).push({});

thanks

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# Set closure and interior points

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