A homotopical Dold-Kan correspondence for Joyal's category $Θ$ and other test categories

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Authors: Léo Hubert
Cited by: 0

Abstract

We prove that for any test category $A$, in the sense of Grothendieck, satisfying a compatibility condition between homology equivalences and weak equivalences of presheaves, the homotopy category of abelian presheaves on $A$ is equivalent to the non-negative derived category of abelian groups. This provides a homotopical generalization of the Dold-Kan correspondence for presheaves of abelian groups over a wide range of test categories. This equivalence of homotopy categories comes from a Quillen equivalence for a model structure on abelian presheaves that we introduce under these conditions. We then show that this result applies to Joyal's category $Θ$.

Fields of Study & Subjects

Homotopy and Cohomology in Algebraic Topology Algebraic structures and combinatorial models Advanced Combinatorial Mathematics

Publication details

Journal / source
arXiv (Cornell University)
Publication date
10 February 2026
Language
EN
Document type
Preprint