文章基本信息
- 标题：Twistings, crossed coproducts, and Hopf-Galois coextensions
- 本地全文：下载
- 作者：S. Caenepeel ; Dingguo Wang ; Yanxin Wang 等
- 期刊名称：International Journal of Mathematics and Mathematical Sciences
- 印刷版ISSN：0161-1712
- 电子版ISSN：1687-0425
- 出版年度：2003
- 卷号：2003
- 期号：69
- 页码：4325-4345
- DOI：10.1155/S0161171203212400
- 出版社：Hindawi Publishing Corporation
- 摘要：
Let H be a Hopf algebra. Ju and Cai (2000) introduced the notion of twisting of an H -module coalgebra. In this paper, we study the relationship between twistings, crossed coproducts, and Hopf-Galois coextensions. In particular, we show that a twisting of an H -Galois coextension remains H -Galois if the twisting is invertible.
