KnowraAxiom of regularityLinked fromLinked fromThe 3 pages that link to Axiom of regularity, each with the reason it gives.All 3Related 2Compared with 1Axiom of extensionalityRelated: Together with extensionality, it supports the standard well-founded picture of sets.Axiom of FoundationRelated: This is the standard alternate name for the axiom and its formal principle.