Let A and B be closed subsets of M, and supposed that both and are connected. Prove that A and B are connected.

Find an example of disconnected subsets A,B of R such that and are connected.

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- Nov 25th 2011, 04:58 PM #1

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- Nov 25th 2011, 07:58 PM #2

- Nov 28th 2011, 12:39 PM #3

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- Nov 28th 2011, 01:34 PM #4

- Nov 28th 2011, 08:23 PM #5

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## Re: need an example here

- Nov 29th 2011, 03:23 AM #6