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Extension of topological groupoids and Serre, Hurewicz morphisms (2103.04560v1)
Published 8 Mar 2021 in math.CT, math.AT, and math.DG
Abstract: 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 properties of a gerbe over a Serre, Hurewicz stack.
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