A note on coring extensions
环与代数
2008-07-31 v3 范畴论
摘要
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.
引用
@article{arxiv.math/0410020,
title = {A note on coring extensions},
author = {Tomasz Brzezinski},
journal= {arXiv preprint arXiv:math/0410020},
year = {2008}
}
备注
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