A meager or Baire first category set in a topological spaceMathworldPlanetmath is one which is a countable union of nowhere dense sets. A Baire second category set is one which contains a countable union of open and dense sets.

Title meager
Canonical name Meager
Date of creation 2013-03-22 13:12:57
Last modified on 2013-03-22 13:12:57
Owner Koro (127)
Last modified by Koro (127)
Numerical id 8
Author Koro (127)
Entry type Definition
Classification msc 54E52
Synonym meagre
Synonym first category
Synonym second category
Related topic BaireCategoryTheorem