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Title: Quillen cohomology of ($\infty,2$)-categories (English)
Author: Harpaz, Yonatan
Author: Nuiten, Joost
Author: Prasma, Matan
Language: English
Journal: Higher Structures
ISSN: 2209-0606
Volume: 3
Issue: 1
Year: 2019
Pages: 17-66
Summary lang: English
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Category: math
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Summary: In this paper we study the homotopy theory of parameterized spectrum objects in the $\infty$-category of $(\infty,2)$-categories, as well as the Quillen cohomology of an $(\infty,2)$-category with coefficients in such a parameterized spectrum. More precisely, we construct an analogue of the twisted arrow category for an $(\infty,2)$-category $\Bbb C$, which we call its twisted 2-cell $\infty$-category. We then establish an equivalence between parameterized spectrum objects over $\Bbb C$, and diagrams of spectra indexed by the twisted 2-cell $\infty$-category of $\Bbb C$. Under this equivalence, the Quillen cohomology of $\Bbb C$ with values in such a diagram of spectra is identified with the two-fold suspension of its inverse limit spectrum. As an application, we provide an alternative, obstruction-theoretic proof of the fact that adjunctions between $(\infty,1)$-categories are uniquely determined at the level of the homotopy (3,2)-category of Cat$_\infty$. (English)
Keyword: Quillen cohomology
Keyword: ($\infty,2$)-category
Keyword: tangent category
Keyword: spectrum
Keyword: Grothendieck construction
MSC: 18D05
MSC: 55P42
MSC: 55S35
MSC: 55T25
idZBL: Zbl 1418.55005
idMR: MR3939045
DOI: 10.21136/HS.2019.02
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Date available: 2026-03-10T18:56:49Z
Last updated: 2026-03-10
Stable URL: http://hdl.handle.net/10338.dmlcz/153409
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