Gerstenhaber brackets on Hochschild cohomology of general twisted tensor products

Abstract

We present techniques for computing Gerstenhaber brackets on Hochschild cohomology of general twisted tensor product algebras. These techniques involve twisted tensor product resolutions and are based on recent results on Gerstenhaber brackets expressed on arbitrary bimodule resolutions.Comment: 14 pages, small changes in the presentation, minor corrections, additional referee corrections, to appear in J. Pure Appl. Algebr