On the discriminant of twisted tensor products

Published 9 Jun 2016 in math.RA | (1606.03105v2)

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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