A note on coring extensions
Rings and Algebras
2008-07-31 v3 Category Theory
Abstract
A notion of a coring extension is defined and it is related to the existence of an additive functor between comodule categories that factorises through forgetful functors. This correspondence between coring extensions and factorisable functors is illustrated by functors between categories of descent data. A category in which objects are corings and morphisms are coring extensions is also introduced.
Cite
@article{arxiv.math/0410020,
title = {A note on coring extensions},
author = {Tomasz Brzezinski},
journal= {arXiv preprint arXiv:math/0410020},
year = {2008}
}
Comments
The statement of the main result, Theorem 2.6, is corrected. Readers who used Theorem 2.6 in its original form are strongly advised to see this revised version