On when a graded ring is graded equivalent to a crossed product

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Title: On when a graded ring is graded equivalent to a crossed product
Author: Haefner, Jeremy
Abstract: Let R be a ring graded by a group G. We are concerned with describing those G-graded rings that are graded equivalent to G-crossed products. We give necessary and sufficient conditions for when a strongly graded ring is graded equivalent to a crossed product, provided that the 1-component is either Azumaya or semiperfect. Our result uses the torsion product theorem of Bass and Guralnick. We also construct various examples of such rings.
Description: First published in Proceedings of the American Mathematical Society in vol. 124, no. 4, published by the American Mathematical Society.
Record URI: http://hdl.handle.net/1850/9701
Date: 1996-04

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