Llarull's theorem on punctured sphere with L^∞ metric
arxiv(2024)
摘要
The classical Llarull theorem states that a smooth metric on n-sphere
cannot have scalar curvature no less than 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 L^∞
metrics on spheres with finitely many points punctured. This is related to a
question of Gromov.
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