KnowraCountable setLinked fromLinked fromThe 23 pages that link to Countable set, each with the reason it gives.All 23Broader topic 5Related 10Narrower topic 4Compared with 4Continuum hypothesisBroader topic: The natural numbers provide the lower cardinality that the hypothesis bounds.CardinalityBroader topic: Countability is the basic test case for comparing infinite cardinalities.Cardinal numberBroader topic: Countability identifies the smallest infinite cardinality, shared by the integers and rationals.InfinityBroader topic: Countability identifies the smallest infinite size shared by the integers and rational numbers.Aleph numberBroader topic: Countably infinite sets have the first infinite aleph, ℵ₀.