On the Azumaya Locus of Some Crossed Products
نویسنده
چکیده
Given D a commutative Noetherian domain and G a finite group acting faithfully on D as automorphisms of D, we describe the Azumaya locus of the crossed product D ∗ G and relate it with the singular locus of DG. To achieve this we will impose some basic homological conditions on D and on D ∗ G. Also, we give necessary and suficient conditions for a crossed product to be Azumaya.
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تاریخ انتشار 2003