The Verdier Hypercovering Theorem
Canadian mathematical bulletin, Tome 55 (2012) no. 2, pp. 319-328
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This note gives a simple cocycle-theoretic proof of the Verdier hypercovering theorem. This theorem approximates morphisms $[X,\,Y]$ in the homotopy category of simplicial sheaves or presheaves by simplicial homotopy classes of maps, in the case where $Y$ is locally fibrant. The statement proved in this paper is a generalization of the standard Verdier hypercovering result in that it is pointed (in a very broad sense) and there is no requirement for the source object $X$ to be locally fibrant.
Mots-clés :
14F35, 18G30, 55U35, simplicial presheaf, hypercover, cocycle
Jardine, J. F. The Verdier Hypercovering Theorem. Canadian mathematical bulletin, Tome 55 (2012) no. 2, pp. 319-328. doi: 10.4153/CMB-2011-093-x
@article{10_4153_CMB_2011_093_x,
author = {Jardine, J. F.},
title = {The {Verdier} {Hypercovering} {Theorem}},
journal = {Canadian mathematical bulletin},
pages = {319--328},
year = {2012},
volume = {55},
number = {2},
doi = {10.4153/CMB-2011-093-x},
url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2011-093-x/}
}
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