English

Reedy categories and the $\Theta$-construction

Algebraic Topology 2012-12-20 v2 Category Theory

Abstract

We use the notion of multi-Reedy category to prove that, if C\mathcal C is a Reedy category, then ΘC\Theta \mathcal C is also a Reedy category. This result gives a new proof that the categories Θn\Theta_n are Reedy categories. We then define elegant Reedy categories, for which we prove that the Reedy and injective model structures coincide.

Keywords

Cite

@article{arxiv.1110.1066,
  title  = {Reedy categories and the $\Theta$-construction},
  author = {Julia E. Bergner and Charles Rezk},
  journal= {arXiv preprint arXiv:1110.1066},
  year   = {2012}
}

Comments

15 pages; final version to appear in Math. Z

R2 v1 2026-06-21T19:15:41.196Z