Hi, can anyone help me prove the following:(adsbygoogle = window.adsbygoogle || []).push({});

Show that the nonwandering set is closed and positively invariant.

I always have trouble working with sets because they're so abstract. If anyone can help me, that would be great. Thanks.

Definition of nonwandering set is here:

http://mathworld.wolfram.com/Nonwandering.html

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# Dynamical systems proof - nonwandering set

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