🌐EnglishEnglishDeutschFrançaisNederlandsPortuguêsРусский中文日本語EntityQ2099981· pop 5· linked from 134 articlespreadditive categoryAlso known as pre-additive category, Ab-categorymathematical category whose hom sets form Abelian groupsAvailable in 5 languages中文日本語РусскийNederlandsvia Wikidata sitelinks · CC0Connectionsinitial and terminal objectsEntitymorphismEntityCategoriesAdditive categories