🌐EnglishEnglishDeutschEspañolPolskiPortuguêsРусский한국어中文日本語EntityQ1780005· pop 11· linked from 124 articlescomma categorymathematics constructAvailable in 10 languagesEspañolDeutsch中文日本語РусскийPortuguêsPolskiUkrainian한국어via Wikidata sitelinks · CC0Connectionsinitial and terminal objectsEntitystrict 2-categoryEntityCategoriesCategories in category theory