EntityQ681771· pop 7· linked from 130 articlesalternative set theorySign in to savealternative to the standard Zermelo–Fraenkel set theory with the axiom of choiceConnectionsset theoryEntityZermelo set theoryEntityBertrand RussellEntityJohn von NeumannEntitysetEntityaxiomEntityGeorg CantorEntityKurt GödelEntitymathematical logicEntityRichard DedekindEntityempty setEntitysubsetEntityCartesian productEntityunionEntityWillard Van Orman QuineEntityVenn diagramEntityintersectionEntitybijectionEntitycardinalityEntityDe Morgan's lawsEntityCategoriesMathematics-related listsSystems of set theory