KnowraCardinality of the continuumLinked fromLinked fromThe 3 pages that link to Cardinality of the continuum, each with the reason it gives.All 3Broader topic 1Related 2Continuum hypothesisRelated: CH concerns whether this cardinal is the first uncountable cardinal.Martin's axiomRelated: Martin's axiom controls the number of dense sets relative to this cardinal.Aleph numberBroader topic: Its position among the alephs is the central question of the continuum hypothesis.