Home›Browse›alternative set theory🌐EnglishEnglishDeutschEspañolFrançaisPortuguêsРусскийفارسی中文日本語EntityQ681771· pop 7· linked from 130 articlesalternative set theorySign in to savealternative to the standard Zermelo–Fraenkel set theory with the axiom of choiceAvailable in 7 languages中文日本語CzechHungarianSlovakفارسیvia Wikidata sitelinks · CC0