Deforming three-manifolds with positive scalar curvature

Details Deforming three-manifolds with positive scalar curvature Deforming three-manifolds with positive scalar curvature

2009-07-14

arxiv.org/abs/0907.2444v2

Mathematics

Differential Geometry

46 pages, 14 figures. An entire section and pictures were added. To appear in Annals of Mathematics

Scientific paper

In this paper we prove that the moduli space of metrics with positive scalar curvature of an orientable compact 3-manifold is path-connected. The proof uses the Ricci flow with surgery, the conformal method, and the connected sum construction of Gromov and Lawson. The work of Perelman on Hamilton's Ricci flow is fundamental. As one of the applications we prove the path-connectedness of the space of trace-free asymptotically flat solutions to the vacuum Einstein constraint equations on $\mathbb{R}^3$.

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