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We prove the universal property of the infinitary exact completion of a category with weak small limits. As an application, we slightly weaken the conditions characterizing essential localizations of varieties (in particular, of module categories) and of presheaf categories.
@article{TAC_2001_8_a16, author = {Enrico M. Vitale}, title = {Essential localizations and infinitary exact completion}, journal = {Theory and applications of categories}, pages = {465--480}, publisher = {mathdoc}, volume = {8}, year = {2001}, language = {en}, url = {http://geodesic.mathdoc.fr/item/TAC_2001_8_a16/} }
Enrico M. Vitale. Essential localizations and infinitary exact completion. Theory and applications of categories, Tome 8 (2001), pp. 465-480. http://geodesic.mathdoc.fr/item/TAC_2001_8_a16/