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  • Extension of Topological Groupoids and Hurewicz Morphisms 
    Chatterjee, Saikat; KOUSHIK, PRAPHULLA (Springer Nature, 2023-08)
    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 Hurewicz (resp. ...