Free C_+ -actions on C^3 are translations

Details Free C_+ -actions on C^3 are translations Free C_+ -actions on C^3 are translations

2002-07-18

arxiv.org/abs/math/0207156v1

Mathematics

Algebraic Geometry

12 pages

Scientific paper

Let X' be a smooth contractible three-dimensional affine algebraic variety
with a free algebraic C_+ -action on it such that S =X'// C_+ is smooth. We
prove that X' is isomorphic to $S \times \C$ and the action is induced by a
translation on the second factor. As a consequence we show that any free
algebraic C_+ -action on C^3 is a translation in a suitable coordinate system.

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