44 citations · 57 across the 13 of their papers we have counts for
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math.AG2004★ 8 cited
On the uniqueness of -actions on affine surfaces
Hubert Flenner, Mikhail Zaidenberg
We prove that a normal affine surface over admits an effective action of a maximal torus () such that any other effective -act…
math.AG2004★ 44 cited
Locally nilpotent derivations on affine surfaces with a $\C^*$-action
Hubert Flenner, Mikhail Zaidenberg
We give a classification of normal affine surfaces admitting an algebraic group action with an open orbit. In particular an explicit algebraic description of the affine coordinate…