Normal CR structures on compact 3-manifolds

Details Normal CR structures on compact 3-manifolds Normal CR structures on compact 3-manifolds

2000-02-26

arxiv.org/abs/math/0002224v1

Mathematics

Differential Geometry

16 pages

Scientific paper

We study normal CR compact manifolds in dimension 3. For a choice of a CR Reeb vector field, we associate a Sasakian metric on them, and we classify those metrics. As a consequence, the underlying manifolds are topologically finite quotiens of the 3-sphere or of a circle bundle over a Riemann surface of positive genus. In the latter case, we prove that their CR automorphisms group is a finite extension of U(1), and we classify the normal CR structures on these manifolds.

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