pith. sign in

arxiv: 1409.4219 · v3 · pith:VGRFWRHXnew · submitted 2014-09-15 · 🧮 math.CT

Algebraically coherent categories

classification 🧮 math.CT
keywords categoriescoherentalgebraicallysemi-abelianalgebraicalgebrasamongstarrows
0
0 comments X
read the original abstract

We call a finitely complete category algebraically coherent when 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, categories of interest in the sense of Orzech, and (compact) Hausdorff algebras over a semi-abelian algebraically coherent theory. 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.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.