ModCat (changes) in nLab
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Context
Categories of categories
(n+1,r+1)(n+1,r+1)-categories of (n,r)-categories
Model category theory
model category, model $\infty$-category
Definitions
Morphisms
Universal constructions
Refinements
Producing new model structures
Presentation of (∞,1)(\infty,1)-categories
Model structures
for ∞\infty-groupoids
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on chain complexes/model structure on cosimplicial abelian groups
related by the Dold-Kan correspondence
for equivariant ∞\infty-groupoids
for rational ∞\infty-groupoids
for rational equivariant ∞\infty-groupoids
for nn-groupoids
for ∞\infty-groups
for ∞\infty-algebras
general ∞\infty-algebras
specific ∞\infty-algebras
for stable/spectrum objects
for (∞,1)(\infty,1)-categories
for stable (∞,1)(\infty,1)-categories
for (∞,1)(\infty,1)-operads
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on algebras over an operad, on modules over an algebra over an operad
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on dendroidal sets, for dendroidal complete Segal spaces, for dendroidal Cartesian fibrations
for (n,r)(n,r)-categories
for (∞,1)(\infty,1)-sheaves / ∞\infty-stacks
Contents
Idea
There are several versions of a (very large) 2-category of model categories, depending on which notion of transformation of adjoints one takes to be the 2-morphisms between 1-morphisms given by Quillen functors.
One choice is to consider 2-morphisms to be conjugate transformations of adjoints between Quillen adjunctions [[Hovey (1999), p. 24](#Hovey99), cf. also Harpaz & Prasma (2015), Def. 2.5.3], such that forgetting the model category-structure is a forgetful 2-functor to $Cat_{Adj}$:
ModCat⟶Cat Adj⟶Cat. ModCat \longrightarrow Cat_{Adj} \longrightarrow Cat \,.
Therefore a pseudofunctor ℬ⟶Cat\mathcal{B} \longrightarrow Cat which factors through ModCatModCat this way has as Grothendieck construction a bifibration of model categories. Under good conditions, the domain of this bifibration carries itself an induced model category structure, see at model structure on Grothendieck constructions.
(n+1,r+1)(n+1,r+1)-categories of (n,r)-categories
References
The 2-category of model categories, left-pointing Quillen adjunctions and conjugate transformations of adjoints is considered in:
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Mark Hovey, p. 24 of: Model Categories, Mathematical Surveys and Monographs, 63 AMS (1999) [[ISBN:978-0-8218-4361-1](https://bookstore.ams.org/surv-63-s), doi:10.1090/surv/063, pdf, Google books]
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Yonatan Harpaz, Matan Prasma, Def. 2.5.3 in: The Grothendieck construction for model categories, Advances in Mathematics 281 (2015) 1306-1363 [[arXiv:1404.1852](https://arxiv.org/abs/1404.1852), 10.1016/j.aim.2015.03.031]
Last revised on September 29, 2023 at 16:59:17. See the history of this page for a list of all contributions to it.