Stably free cancellation for orders
Tommy Hofmann (University of Siegen)
Wednesday 26th November 16:00-17:00
Maths 311B
Abstract
A ring has the stably free cancellation property if every stably free module is free. We will discuss this property for orders in semisimple algebras and show how the question of whether an order has this property can be answered algorithmically. As an application, we obtain new cancellation results for integral group rings. This is joint work with Werner Bley and Henri Johnston.
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