Centralizers of locally nilpotent derivations
โ Scribed by David R. Finston; Sebastian Walcher
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 754 KB
- Volume
- 120
- Category
- Article
- ISSN
- 0022-4049
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โฆ Synopsis
Locally nilpotent derivations of the polynomial ring in n variables over the complex field, algebraic actions of the additive group G. of complex numbers on C", and vector fields on C" admitting a strictly polynomial flow, are equivalent objects. The polynomial centralizer of the vector field corresponding to a triangulable locally nilpotent derivation is investigated, yielding a tiangulability criterion. Several new examples of nontriangulable Ga actions on C" are presented.
๐ SIMILAR VOLUMES
Given a UFD R containing the rational numbers, we study locally nilpotent w x R-derivations of the polynomial ring R X, Y ; in particular, we give a generalization of Rentschler's Theorem and a criterion for the existence of a slice. These results are then applied to describe rank two locally nilpot