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math.DG2024

More Extreme Limits of Manifolds with Positive Scalar Curvature

Wenchuan Tian

In this article, we extend the example constructed in the paper by Sormani-Tian-Wang to build new examples that satisfy the assumptions of the conjecture by Gromov. Each of these n…

math.DG2024

On the Scalar Curvature Compactness Conjecture in the Conformal Case

Brian Allen, Wenchuan Tian, Changliang Wang

Is a sequence of Riemannian manifolds with positive scalar curvature, satisfying some conditions to keep the sequence reasonable, compact? What topology should one use for the conv…

math.DG2023

Compactness of sequences of warped product circles over spheres with nonnegative scalar curvature

Wenchuan Tian, Changliang Wang

Gromov and Sormani conjectured that a sequence of three dimensional Riemannian manifolds with nonnegative scalar curvature and some additional uniform geometric bounds should have…

math.DG2023

An Extreme Limit with Nonnegative Scalar Curvature

Christina Sormani, Wenchuan Tian, Changliang Wang

In 2014, Gromov vaguely conjectured that a sequence of manifolds with nonnegative scalar curvature should have a subsequence which converges in some weak sense to a limit space wit…

math.DG2018

A Compactness Theorem for Rotationally Symmetric Riemannian Manifolds with Positive Scalar Curvature

Jiewon Park, Wenchuan Tian, Changliang Wang

Gromov and Sormani conjectured that sequences of compact Riemannian manifolds with nonnegative scalar curvature and area of minimal surfaces bounded below should have subsequences…