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On simple Shamsuddin derivations in two variables (1412.8373v1)

Published 29 Dec 2014 in math.AC

Abstract: We study the subgroup of $k$-automorphisms of $k[x,y]$ which commute with a simple derivation $D$ of $k[x,y].$ We prove, for example, that this subgroup is trivial when $D$ is a Shamsuddin simple derivation. In the general case of simple derivations, we obtain properties for the elements of this subgroup.

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