Holmstrom Exact category

This can mean several different things. See nLab for one of them. Exact category: Means one thing in Borceaux vol 2 and another thing inn Quillen.

http://ncatlab.org/nlab/show/Quillen+exact+category

For an expose of the Quillen stuff, see Buehler

In the 50s, this was defined by Buchsbaum as “an abelian category but without the requirement that direct sums exist”. Is this also the modern definition?

LNM0236 treats exact and regular categories, and “categories of sheaves”, but doesn’t look terribly interesting at first sight

nLab page on Exact category

Created on June 9, 2014 at 21:16:13 by Andreas Holmström