Closure operator
From Encyclopedia of Mathematics
Revision as of 16:35, 10 January 2015 by Richard Pinch (talk | contribs) (Start article: Closure operator, disambiguating various usages)
An idempotent operation on a partially ordered set, see Closure relation.
In particular, a Kuratowksi closure operator defining a topological space, or Čech closure operator operator defining a pre-topological space, see Closure space.
See also Closed operator, a linear operator on a Banach space that preserves convergence.
How to Cite This Entry:
Closure operator. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Closure_operator&oldid=36190
Closure operator. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Closure_operator&oldid=36190