Deforming three-manifolds with positive scalar curvature

Abstract

In this paper we prove that the moduli space of metrics with positive scalar curvature of an orientable compact three-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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Authors

Fernando C. Marques

Instituto de Matemática Pura e Aplicada (IMPA)
Estrada Dona Castorina 110
22460-320 Rio de Janeiro
Brazil