Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/62680
Type: Thesis
Title: Fundamental bigroupoids and 2-covering spaces.
Author: Roberts, David Michael
Issue Date: 2010
School/Discipline: School of Mathematical Sciences : Pure Mathematics
Abstract: This thesis introduces two main concepts: a fundamental bigroupoid of a topological groupoid and 2-covering spaces, a categorification of covering spaces. The first is applied to the second to show, among other things, that the fundamental 2-group of the 2-covering space is a sub-2-group of the fundamental 2-group of the base. Along the way we derive general results about localisations of the 2-categories of categories and groupoids internal to a site at classes of weak equivalences, construct a topological fundamental bigroupoid of locally well-behaved spaces, and finish by providing a rich source of examples of 2-covering spaces, including a functorial 2-connected 2-covering space.
Advisor: Murray, Michael
Varghese, Mathai
Dissertation Note: Thesis (Ph.D.) -- University of Adelaide, School of Mathematical Sciences, 2010
Keywords: category theory; groupoids; algebraic topology; homotopy theory
Appears in Collections:Research Theses

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