Pointed Hopf actions on quantum generalized Weyl algebras
Abstract
We study actions of pointed Hopf algebras in the -graded setting. Our main result classifies inner-faithful actions of generalized Taft algebras on quantum generalized Weyl algebras which respect the -grading. We also show that generically the invariant rings of Taft actions on quantum generalized Weyl algebras are commutative Kleinian singularities.
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