Twisted Support Varieties
نویسنده
چکیده
We define and study twisted support varieties for modules over an Artin algebra, where the twist is induced by an automorphism of the algebra. Under a certain finite generation hypothesis we show that the twisted variety of a module satisfies Dade’s Lemma and is one dimensional precisely when the module is periodic with respect to the twisting automorphism. As a special case we obtain results on D Tr-periodic modules over Frobenius algebras.
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تاریخ انتشار 2007