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Derived set (mathematics)
(Redirected from Perfect set)
In mathematics a derived set is a construction in point-set topology that consists of taking the set of limit points of a given subset S of a topological space X. The derived set of S is usually denoted by S′.
A subset S of a topological space X is said to be perfect if S = S′.
Georg Cantor developed set theory in large part to study derived sets on the real line.
Last updated: 05-28-2005 15:16:02
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details