Classifying theory for simplicial parametrized groups
| Autor: | Stevenson, Danny |
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| Rok vydání: | 2012 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | In this paper we describe a classifying theory for families of simplicial topological groups. If $B$ is a topological space and $G$ is a simplicial topological group, then we can consider the non-abelian cohomology $H(B,G)$ of $B$ with coefficients in $G$. If $G$ is a topological group, thought of as a constant simplicial group, then the set $H(B,G)$ is the set of isomorphism classes of principal $G$ bundles, or $G$ torsors, on $B$. For more general simplicial groups $G$, the set $H(B,G)$ parametrizes the set of equivalence classes of higher $G$ torsors on $B$. In this paper we consider a more general setting where $G$ is replaced by a simplicial group in the category of spaces over $B$. The main result of the paper is that under suitable conditions on $B$ and $G$ there is an isomorphism between $H(B,G)$ and the set of isomorphism classes of fiberwise principal bundles on $B$, with structure group $|G|$ given by the fiberwise geometric realization of $G$. Comment: 30 pages, uses xy-pic; v2 added missing fibrancy condition, corrected minor typos and updated references |
| Databáze: | arXiv |
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