🌐EnglishEnglishDeutschPortuguêsРусский한국어中文日本語EntityQ10564851· pop 8· linked from 63 articlesclosure operatorAlso known as hull operatormathematical operatorAvailable in 8 languagesDeutsch中文日本語РусскийHebrewHungarian한국어via Wikidata sitelinks · CC0ConnectionsfieldEntitypower setEntityCategoriesClosure operatorsOrder theoryUniversal algebra