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real analysis - Show that the closure of $A$ is the intersection of all closed sets containing $A$, topology proof needed - Mathematics Stack Exchange
![SOLVED: Prove that the finite union of closed sets is closed. 10. Show that arbitrary intersection of open sets may not be open. 11, Let X be a topological space and Ac SOLVED: Prove that the finite union of closed sets is closed. 10. Show that arbitrary intersection of open sets may not be open. 11, Let X be a topological space and Ac](https://cdn.numerade.com/ask_images/d076eaf161794e60923c3351975d200c.jpg)
SOLVED: Prove that the finite union of closed sets is closed. 10. Show that arbitrary intersection of open sets may not be open. 11, Let X be a topological space and Ac
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general topology - Prove that a closed set contains all its limit points - Mathematics Stack Exchange
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