Twistings, crossed coproducts and Hopf-Galois coextensions
classification
🧮 math.QA
math.RA
keywords
twistingcoextensionscoproductscrossedgaloishopf-galoistwistingsalgebra
read the original abstract
Let $H$ be a Hopf algebra. Ju and Cai introduced the notion of twisting of an $H$-module coalgebra. In this note, 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.
This paper has not been read by Pith yet.
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.