preadditive category

Fetched 2026-10-26 (cache).

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Noun

1. {{lb|en|mathematics}} A [[category]] which is [[enrich over|enriched over]] the category <math>\text{Ab}</math> of [[abelian group|abelian groups]]; that is, each [[hom-set]] is [[equip|equipped]] with an abelian group [[structure]], and [[composition]] is [[distributive]] over the [[group operation|group operations]] of each hom-set.

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