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arXiv · 1405.5465

Gerstenhaber brackets on Hochschild cohomology of quantum symmetric algebras and their group extensions

Sarah Witherspoon·Guodong Zhou
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Abstract

We construct chain maps between the bar and Koszul resolutions for a quantum symmetric algebra (skew polynomial ring). This construction uses a recursive technique involving explicit formulae for contracting homotopies. We use these chain maps to compute the Gerstenhaber bracket, obtaining a quantum version of the Schouten-Nijenhuis bracket on a symmetric algebra (polynomial ring). We compute brackets also in some cases for skew group algebras arising as group extensions of quantum symmetric algebras.

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BibTeXRIS

Sarah Witherspoon, Guodong Zhou. 2014-05-21. Gerstenhaber brackets on Hochschild cohomology of quantum symmetric algebras and their group extensions. https://doi.org/10.2140/pjm.2016.283.223

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