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Also, it is possible for the opposite to occur. So-called clopen sets are both open and closed. http://en.m.wikipedia.org/wiki/Clopen_set http://en.m.wikipedia
by gh02t 12y ago
Also, it is possible for the opposite to occur. So-called clopen sets are both open and closed.
http://en.m.wikipedia.org/wiki/Clopen_set http://en.m.wikipedia.org/wiki/Clopen_set