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Llarull's theorem on punctured sphere with $L^\infty$ metric

Differential Geometry 2024-06-05 v2 Metric Geometry

Abstract

The classical Llarull theorem states that a smooth metric on nn-sphere cannot have scalar curvature no less than n(n1)n(n-1) and dominate the standard spherical metric at the same time unless it is the standard spherical metric. In this work, we prove that Llarull's rigidity theorem holds for LL^{\infty} metrics on spheres with finitely many points punctured. This is related to a question of Gromov.

Keywords

Cite

@article{arxiv.2405.19724,
  title  = {Llarull's theorem on punctured sphere with $L^\infty$ metric},
  author = {Jianchun Chu and Man-Chun Lee and Jintian Zhu},
  journal= {arXiv preprint arXiv:2405.19724},
  year   = {2024}
}

Comments

printing mistakes corrected, 10 pages

R2 v1 2026-06-28T16:46:41.457Z