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Apr 30, 2019 at 3:59 history closed YCor
Ramiro de la Vega
user44191
Alexandre Eremenko
Gabriel C. Drummond-Cole
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Apr 29, 2019 at 18:03 comment added Mark Fischler @Ramino de la Vega Why not make this an answer so that the question can be marked as answered?
Apr 29, 2019 at 17:40 comment added Ramiro de la Vega @JayKangel, that only works if $C$ is closed. If $C$ is not closed and $p \in \mathrm{cl}(C) \setminus C$ then $A=\mathrm{cl}(C)$ and $B=\{p\}$ is always a counterexample.
Apr 29, 2019 at 17:40 review Close votes
Apr 30, 2019 at 3:59
Apr 29, 2019 at 17:11 history asked John McClane CC BY-SA 4.0