+A **closed set** in [Topology](/wiki/topology) is a space that contains all its [Limit Points](/wiki/limit_point). It fully encompasses its boundary, creating a sense of completeness unlike an [Open Set](/wiki/open_set).
+## See also
+- [Open Set](/wiki/open_set)
+- [Limit Point](/wiki/limit_point)
+- [Topology](/wiki/topology)
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