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math.RA2019
Gerstenhaber brackets for skew group algebras in positive characteristic
A. V. Shepler, S. Witherspoon
The deformation theory of an algebra is controlled by the Gerstenhaber bracket, a Lie bracket on Hochschild cohomology. We develop techniques for evaluating Gerstenhaber brackets o…
math.RA2019
Group-twisted Alexander-Whitney and Eilenberg-Zilber maps
A. V. Shepler, S. Witherspoon
We define group-twisted Alexander-Whitney and Eilenberg-Zilber maps for converting between bimodule resolutions of skew group algebras. These algebras are the natural semidirect pr…