Localized gluing of Riemannian metrics in interpolating their scalar curvature

Details Localized gluing of Riemannian metrics in interpolating their scalar curvature Localized gluing of Riemannian metrics in interpolating their scalar curvature

2010-03-26

arxiv.org/abs/1003.5146v1

Mathematics

Differential Geometry

Scientific paper

We show that two smooth nearby Riemannian metrics can be glued interpolating their scalar curvature. The resulting smooth metric is the same as the starting ones outside the gluing region and has scalar curvature interpolating between the original ones. One can then glue metrics while maintaining inequalities satisfied by the scalar curvature. We also glue asymptotically Euclidean metrics to Schwarzschild ones and the same for asymptotically Delaunay metrics, keeping bounds on the scalar curvature, if any. This extend the Corvino gluing near infinity to non-constant scalar curvature metrics.

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