The structure of weak coalgebra-Galois extensions
Quantum Algebra
2007-05-23 v1
Abstract
Weak coalgebra-Galois extensions are studied. A notion of an invertible weak entwining structure is introduced. It is proven that, within an invertible weak entwining structure, the surjectivity of the canonical map implies bijectivity provided the structure coalgebra C is either coseparable or projective as a C-comodule.
Cite
@article{arxiv.math/0411230,
title = {The structure of weak coalgebra-Galois extensions},
author = {Tomasz Brzezinski and Ryan B. Turner and Adam P. Wrightson},
journal= {arXiv preprint arXiv:math/0411230},
year = {2007}
}
Comments
27 pages, LaTeX