Geodesic
Algebraically coherent categories
Theory and applications of categories, Tome 30 (2015), pp. 1864-1905.

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We call a finitely complete category algebraically coherent if the change-of-base functors of its fibration of points are coherent, which means that they preserve finite limits and jointly strongly epimorphic pairs of arrows. We give examples of categories satisfying this condition; for instance, coherent categories and categories of interest in the sense of Orzech. We study equivalent conditions in the context of semi-abelian categories, as well as some of its consequences: including amongst others, strong protomodularity, and normality of Higgins commutators for normal subobjects, and in the varietal case, fibre-wise algebraic cartesian closedness.
Publié le :
Classification : 20F12, 08C05, 17A99, 18B25, 18G50}
Keywords: Coherent functor, Smith, Huq, Higgins commutator, semi-abelian, locally algebraically cartesian closed category, category of interest 
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     title = {Algebraically coherent categories},
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     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2015_30_a53/}
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Alan S. Cigoli; James R. A. Gray; Tim Van der Linden. Algebraically coherent categories. Theory and applications of categories, Tome 30 (2015), pp. 1864-1905. http://geodesic.mathdoc.fr/item/TAC_2015_30_a53/