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Metric limits of manifolds with positive scalar curvature

Differential Geometry 2024-11-19 v3 Metric Geometry

Abstract

We show that any Riemannian metric conformal to the round metric on SnS^n, for n4n\geq 4, arises as a limit of a sequence of Riemannian metrics of positive scalar curvature on SnS^n in the sense of uniform convergence of Riemannian distance. In particular, non-negativity of scalar curvature is not preserved under such limits.

Keywords

Cite

@article{arxiv.2203.01223,
  title  = {Metric limits of manifolds with positive scalar curvature},
  author = {Man-Chun Lee and Peter M. Topping},
  journal= {arXiv preprint arXiv:2203.01223},
  year   = {2024}
}

Comments

To appear in the American Journal of Mathematics