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Density Problems for second order Sobolev Spaces and Cut-off Functions on Manifolds With Unbounded Geometry
Abstract We consider complete non-compact manifolds with either a sub-quadratic growth of the norm of the Riemann curvature, or a sub-quadratic growth of both the norm of the Ricci curvature and the squared inverse of the injectivity radius. We show the existence on such a manifold of a distance-like function …