A Quillen theorem Bn for homotopy pullbacks
Algebraic Topology
2011-01-26 v1 Category Theory
Abstract
We prove an extension of the Quillen Theorem Bn for homotopy fibres to a similar result for homotopy pullbacks and use this to obtain sufficient conditions on a pullback diagram of categories to guarantee that it be a homotopy pullback.
Cite
@article{arxiv.1101.4879,
title = {A Quillen theorem Bn for homotopy pullbacks},
author = {C. Barwick and D. M. Kan},
journal= {arXiv preprint arXiv:1101.4879},
year = {2011}
}