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math.AC2016
The automorphism theorem and additive group actions on the affine plane
Shigeru Kuroda
Due to Rentschler, Miyanishi and Kojima, the invariant ring for a -action on the affine plane over an arbitrary field is generated by one coordinate. In this note, we gi…
math.AC2016
Stably co-tame polynomial automorphisms over commutative rings
Shigeru Kuroda
We say that a polynomial automorphism in variables is stably co-tame if the tame subgroup in variables is contained in the subgroup generated by and affine automorp…