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References to 'regular category'
1. Artin map by djao
2. derived functor by mathcam
3. effective equivalence relation by CWoo
4. enough projectives by CWoo
5. exact functor by antizeus
6. exact sequences for modules with finite projective dimension by joking
7. generalized Van Kampen theorems (HD-VKT), higher dimensional by bci1
8. index of category theory by rspuzio
9. proof of the uniformization theorem by Simone
10. quotient category, additive by bci1
11. rank-nullity theorem by yark
12. sheaf by djao
13. spin groups by bci1
14. supplemental axioms for an Abelian category by archibal
15. syzygy by CWoo
16. Tor by whm22