The structure of corings with a grouplike element
Rings and Algebras
2007-05-23 v2 Commutative Algebra
Abstract
Characteristic properties of corings with a grouplike element are analysed. Associated differential graded rings are studied. A correspondence between categories of comodules and flat connections is established. A generalisation of the Cuntz-Quillen theorem relating existence of connections in a module to projectivity of this module is proven.
Cite
@article{arxiv.math/0108117,
title = {The structure of corings with a grouplike element},
author = {Tomasz Brzezinski},
journal= {arXiv preprint arXiv:math/0108117},
year = {2007}
}
Comments
14 pages, LaTeX, uses diagrams.tex Version to appear in Banach Center Publications