Groupoid Actions on Sets, Duality and a Morita Context
Rings and Algebras
2021-11-30 v1
Abstract
Let G and K be groupoids. We present the notion of a (G_{\alpha},K_{\beta})-set and we prove a duality theorem in this context, which extends the duality theorem for graded algebras by groups. For A a unital G-graded algebra and X a finite split G-set, we show that there is an isomorphism between the category of the left A-modules X-graded and the category of the left A \#_{\alpha}^{G}X-modules. As an application of this isomorphism, we construct a Morita context.
Cite
@article{arxiv.2111.13768,
title = {Groupoid Actions on Sets, Duality and a Morita Context},
author = {Saradia Della Flora and Daiana Flôres and Andrea Morgado and Thaísa Tamusiunas},
journal= {arXiv preprint arXiv:2111.13768},
year = {2021}
}