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Question on point set topology

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1 $begingroup$ Does there exist a closed set which is an intersection of a collection of infinite open sets? analysis share | cite | improve this question asked 1 hour ago Tony Tong Tony Tong 32 2 New contributor Tony Tong is a new contributor to this site. Take care in asking for clarification, commenting, and answering. Check out our Code of Conduct. $endgroup$