18 citations · 50 across the 21 of their papers we have counts for
Showing 2021Show all
2 papers · 1 filter
math.DG2021★ 3 cited
Atiyah sequence and Gauge transformations of a principal -bundle over a Lie groupoid
Saikat Chatterjee, Adittya Chaudhuri, Praphulla Koushik
In this paper, a notion of a principal -bundle over a Lie groupoid has been introduced. For such principal -bundles, we produced a short exact sequence of VB-groupoids, namel…
math.CT2021
Extension of topological groupoids and Serre, Hurewicz morphisms
Saikat Chatterjee, Praphulla Koushik
In this paper, we introduce the notion of a topological groupoid extension and relate it to the already existing notion of a gerbe over a topological stack. We further study the pr…