Graded cofinite rings of differential operators

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dc.creatorKnop, Friedrich
dc.date2004-03-29
dc.date2005-09-14
dc.date.accessioned2026-07-07T06:29:26Z
dc.date.available2026-07-07T06:29:26Z
dc.descriptionWe classify subalgebras of a ring of differential operators which are big in the sense that the extension of associated graded rings is finite. We show that these subalgebras correspond, up to automorphisms, to uniformly ramified finite morphisms. This generalizes a theorem of Levasseur-Stafford on the generators of the invariants of a Weyl algebra under a finite group.
dc.descriptionv1: 9 pages; v2: 22 pages, completely rewritten, main theorem fixed, applications added; v3: 23 pages, references added, minor corrections
dc.identifierhttps://arxiv.org/abs/math/0403493
dc.identifierhttp://arxiv.org/abs/math/0403493
dc.identifierMichigan Math. J. 54 (2006) 3-24
dc.identifierdoi:10.1307/mmj/1144437435
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/98028
dc.subjectRings and Algebras
dc.subjectAlgebraic Geometry
dc.subjectRepresentation Theory
dc.subject16S32
dc.titleGraded cofinite rings of differential operators
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