Studyng geometry of some Riemannian manifolds with a help of a computer
| Full text | |
| Author(s): |
Cavenaghi, Leonardo F.
;
J M e Silva, Renato
;
Speranca, Llohann D.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | COLLECTANEA MATHEMATICA; v. N/A, p. 30-pg., 2023-02-16. |
| Abstract | |
This paper is devoted to a deep analysis of the process known as Cheeger deformation, applied to manifolds with isometric group actions. Here, we provide new curvature estimates near singular orbits and present several applications. As the main result, we answer a question raised by a seminal result of Searle-Wilhelm about lifting positive Ricci curvature from the quotient of an isometric action. To answer this question, we develop techniques that can be used to provide a substantially streamlined version of a classical result of Lawson and Yau, generalize a curvature condition of Chavez, Derdzinski, and Rigas, as well as, give an alternative proof of a result of Grove and Ziller. (AU) | |
| FAPESP's process: | 17/10892-7 - Geometry and topology under positive/nonnegative sectional curvature |
| Grantee: | Llohann Dallagnol Sperança |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 17/19657-0 - Classification and global properties of Riemannian foliations |
| Grantee: | Llohann Dallagnol Sperança |
| Support Opportunities: | Scholarships abroad - Research |