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arXiv · 1101.4879

A Quillen theorem Bn for homotopy pullbacks

C. Barwick·D. M. Kan
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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.

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C. Barwick, D. M. Kan. 2011-01-25. A Quillen theorem Bn for homotopy pullbacks. https://arxiv.org/abs/1101.4879

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