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math.RT2014
An Alternate Approach to the Lie Bracket on Hochschild Cohomology
Cris Negron, Sarah Witherspoon
We define Gerstenhaber's graded Lie bracket directly on complexes other than the bar complex, under some conditions. The Koszul complex of a Koszul algebra in particular satisfies…
math.KT2014
Spectral Sequences for the Cohomology Rings of a Smash Product
Cris Negron
Stefan and Guichardet have provided Lyndon-Hochschild-Serre type spectral sequences which converge to the Hochschild cohomology and Ext groups of a smash product. We show that thes…