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arXiv · 1606.03105

On the discriminant of twisted tensor products

Jason Gaddis·Ellen Kirkman·W. Frank Moore
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Abstract

We provide formulas for computing the discriminant of noncommutative algebras over central subalgebras in the case of Ore extensions and skew group extensions. The formulas follow from a more general result regarding the discriminants of certain twisted tensor products. We employ our formulas to compute automorphism groups for examples in each case.

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Jason Gaddis, Ellen Kirkman, W. Frank Moore. 2016-12-21. On the discriminant of twisted tensor products. https://doi.org/10.1016/j.jalgebra.2016.12.019

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