Closure (topology): Difference between revisions

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imported>Hendra I. Nurdin
(Stub for closure)
imported>Hendra I. Nurdin
m (Closures moved to Closure: The plural "closures" is not the appropriate title for this article)
(No difference)

Revision as of 16:37, 16 September 2007

In mathematics, the closure of a subset A of a topological space X is the set union of A and all its limit points in X. It is usually denoted by . Other equivalent definitions of the closure of A is as the smallest closed set in X containing A, or the intersection of all closed sets in X containing A.