阿贝尔范畴
- 网络Abelian category
阿贝尔范畴-
并说明在有限生成的阿贝尔群范畴内F-同构是一等价关系，否则不然。
We also consider the Five Lemma in the case of F-isomorphism and F & exactness , It is shown that in the category of finitely generated abelian groups the F-isomorphism is an equivalent relation but is not true out of this category .
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随后，Heller，Butler和Horrocks在更为一般的具有相对阿贝尔结构的范畴上发展了相应的理论。
Afterwards , Heller , Butler and Horrocks developed it in more general categories with a relative abelian structure .