Scalar curvature rigidity of degenerate warped product spaces

Autor:	Wang, Jinmin, Xie, Zhizhang
Rok vydání:	2023
Předmět:	Mathematics - Differential Geometry
Druh dokumentu:	Working Paper
Popis:	In this paper we prove the scalar curvature extremality and rigidity for a class of warped product spaces that are possibly degenerate at the two ends. The leaves of these warped product spaces can be any closed Riemannian manifolds with nonnegative curvature operators and nonvanishing Euler characteristics, flat tori, round spheres and their direct products. In particular, we obtain the scalar curvature extremality and rigidity for certain degenerate toric bands and also for round spheres with two antipodal points removed. This answers positively the corresponding questions of Gromov in all dimensions. Comment: 39 pages. Some proofs in Section 3 are revised and simplified by using the arguments from Section 4
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2306.05413 Zobrazit plný text záznamu View this record from Arxiv