Injective Modules over Down-Up Algebras

Details Injective Modules over Down-Up Algebras Injective Modules over Down-Up Algebras

2009-06-16

arxiv.org/abs/0906.2930v1

Mathematics

Rings and Algebras

dedicated to Patrick F. Smith - teacher and friend

Scientific paper

The purpose of this paper is to study finiteness conditions on injective hulls of simple modules over Noetherian Down-Up algebras. We will show that the Noetherian Down-Up algebras A(\alpha,\beta,\gamma) which are fully bounded are precisely those which are module-finite over a central subalgebra. We show that injective hulls of simple A(\alpha,\beta,\gamma)-modules are locally Artinian provided the roots of X^2-\alpha X-\beta are distinct roots of unity or both equal to one.

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