🌐EnglishEnglishDeutschEspañolFrançaisNederlandsPolskiPortuguêsTiếng ViệtРусскийالعربيةفارسی中文日本語EntityQ592651· pop 8· linked from 101 articlesnon-abelian groupgroup where ab = ba does not always holdConnectionsLie groupEntitytopological groupEntityCategoriesProperties of groups