Invariance properties of coHochschild homology
Invariance properties of coHochschild homology
复制标题
coHochschild 同调的不变性
DOI:
10.1016/j.jpaa.2020.106505
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发表时间:
2021
影响因子:
0.8
通讯作者:
Shipley, Brooke
中科院分区:
文献类型:
--
作者:
Hess, Kathryn;Shipley, Brooke
The notion of Hochschild homology of a dg algebra admits a natural dualization, the coHochschild homology of a dg coalgebra, introduced in [23] as a tool to study free loop spaces. In this article we prove “agreement” for coHochschild homology, i.e., that the coHochschild homology of a dg coalgebraCis isomorphic to the Hochschild homology of the dg category of appropriately compactC-comodules, from which Morita invariance of coHochschild homology follows. Generalizing the dg case, we define the topological coHochschild homology (coTHH) of coalgebra spectra, of which suspension spectra are the canonical examples, and show that coTHH of the suspension spectrum of a spaceXis equivalent to the suspension spectrum of the free loop space onX, as long asXis a nice enough space (for example, simply connected.) Based on this result and on a Quillen equivalence established in [24], we prove that “agreement” holds for coTHH as well.
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DOI:
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发表时间:
2019
期刊:
Hopf Algebras and Quantum Groups
影响因子:
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