compact Hausdorff space is extremally disconnected if its function algebra is a bounded complete lattice


Let X be a compactPlanetmathPlanetmath Hausdorff space and C(X) the algebra of continuous functionsMathworldPlanetmathPlanetmath X. Recall that C(X) is a vector lattice with the usual order (http://planetmath.org/PartialOrder): fgg-f takes positivePlanetmathPlanetmath (or zero) values.

Theorem - If every subset of C(X) that is bounded from above has a least upper bound (i.e. C(X) is a bounded complete latticeMathworldPlanetmath), then X is extremally disconnected.

Title compact Hausdorff space is extremally disconnected if its function algebra is a bounded complete lattice
Canonical name CompactHausdorffSpaceIsExtremallyDisconnectedIfItsFunctionAlgebraIsABoundedCompleteLattice
Date of creation 2013-03-22 17:53:08
Last modified on 2013-03-22 17:53:08
Owner asteroid (17536)
Last modified by asteroid (17536)
Numerical id 5
Author asteroid (17536)
Entry type Theorem
Classification msc 54G05
Classification msc 46J10
Classification msc 06F20
Synonym sufficient condition for a compact Hausdorf space to be extremally disconnected