🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTiếng ViệtРусскийالعربيةفارسیไทย한국어中文日本語EntityQ4720939· pop 33· linked from 218 articlesclosurethe smallest superset of a given set that is closed under a given operationAvailable in 33 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةBahasa IndonesiaConnectionsfunctionEntitysubsetEntityCategoriesAbstract algebraClosure operatorsSet theory