Higher-order Hochschild cohomology over any d-sphere and tertiary Hochschild cohomology control the associativity of deformed algebra products.
Simplicial Structures Over the 3-Sphere and Generalized Higher Order Hochschild Homology
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abstract
In this paper we investigate the simplicial structure of a chain complex associated to the higher order Hochschild homology over the $3$-sphere. We also introduce the tertiary Hochschild homology corresponding to a quintuple $(A,B,C,\varepsilon,\theta)$, which becomes natural after we organize the elements in a convenient manner. We establish these results by way of a bar-like resolution in the context of simplicial modules. Finally, we generalize the higher order Hochschild homology over a trio of simplicial sets, which also grants natural geometric realizations.
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Deformation Theories Controlled by Hochschild Cohomologies
Higher-order Hochschild cohomology over any d-sphere and tertiary Hochschild cohomology control the associativity of deformed algebra products.