Home›Axiom of choice›ニールセン＝シュライヤーの定理🌐日本語EnglishDeutschEspañolFrançaisPortuguêsTürkçe日本語EntityQ1259814· pop 5· linked from 15 articlesニールセン＝シュライヤーの定理theorem that every subgroup of a free group is itself freeAvailable in 5 languagesFrançaisDeutschPortuguêsHebrewvia Wikidata sitelinks · CC0ConnectionszbMATH OpenEntityInternational Standard Book NumberEntityCategoriesAxiom of choiceProperties of groupsTheorems in algebraTheorems in group theory