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2005 Higher monodromy
Pietro Polesello, Ingo Waschkies
Homology Homotopy Appl. 7(1): 109-150 (2005).


For a given category $\mathsf{C}$ and a topological space $X$, the constant stack on $X$ with stalk $\mathsf{C}$ is the stack of locally constant sheaves with values in $\mathsf{C}$. Its global objects are classified by their monodromy, a functor from the fundamental groupoid $\Pi_1(X)$ to $\mathsf{C}$. In this paper we recall these notions from the point of view of higher category theory and then define the 2-monodromy of a locally constant stack with values in a 2-category $\mathsf{C}$ as a 2-functor from the homotopy 2-groupoid $\Pi_2(X)$ to $\mathsf{C}$. We show that 2-monodromy classifies locally constant stacks on a reasonably well-behaved space $X$. As an application, we show how to recover from this classification the cohomological version of a classical theorem of Hopf, and we extend it to the non abelian case.


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Pietro Polesello. Ingo Waschkies. "Higher monodromy." Homology Homotopy Appl. 7 (1) 109 - 150, 2005.


Published: 2005
First available in Project Euclid: 13 February 2006

zbMATH: 1078.18011
MathSciNet: MR2155521

Primary: 18G50
Secondary: 55P99

Rights: Copyright © 2005 International Press of Boston


Vol.7 • No. 1 • 2005
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