Editing Compact (section)

== Mathematics ==
* [[Compact element]], those elements of a partially ordered set that cannot be subsumed by a supremum of any directed set that does not already contain them
* [[Compact operator]], a linear operator that takes bounded subsets to relatively compact subsets, in functional analysis
* [[Compact space]], a topological space such that every open cover has a finite subcover
* [[Quasi-compact morphism]], a morphism of schemes for which the inverse image of any quasi-compact open set is again quasi-compact