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math.CT2018
A relative monotone-light factorisation system for internal groupoids
Alan S. Cigoli, Tomas Everaert, Marino Gran
Given an exact category , it is well known that the connected component reflector from the category $\mathsf{Gpd}(\m…
math.CT2016
A classification theorem for normal extensions
Mathieu Duckerts-Antoine, Tomas Everaert
For a particular class of Galois structures, we prove that the normal extensions are precisely those extensions that are "locally" split epic and trivial, and we use this to prove…