closed set (idea)

See all of closed set, there is 1 more in this node.

open set	Brouwer's fixed point theorem	compact	limit point
Closure	Topological Space	Hesperus is Phosphorus	Robert A. Heinlein on Starship Troopers
Bolzano Theorem	covering map	Proof that the rational numbers are dense	derived set
Collector of Words	Urysohn lemma	NSA: Introduction and Construction	Heine-Borel Theorem
clopen	regular space	The Cheshire Set	closed
The math Project	Regular	empty set	cleavage