On a class of hereditary crossed-product orders

Abstract

In this brief note, we revisit a class of crossed-product orders over discrete valuation rings introduced by D. E. Haile. We give simple but useful criteria, which involve only the two-cocycle associated with a given crossed-product order, for determining whether such an order is a hereditary order or a maximal order.

6 pages. Accepted for publication by the Proceedings of the American Mathematical Society

Cited by in corpus (1)

• Weak crossed-product orders over valuation rings