Results 21 to 30 of about 641 (52)

Constrained deformations of positive scalar curvature metrics, II

open access: yesCommunications on Pure and Applied Mathematics, Volume 77, Issue 1, Page 795-862, January 2024.
Abstract We prove that various spaces of constrained positive scalar curvature metrics on compact three‐manifolds with boundary, when not empty, are contractible. The constraints we mostly focus on are given in terms of local conditions on the mean curvature of the boundary, and our treatment includes both the mean‐convex and the minimal case.
Alessandro Carlotto, Chao Li
wiley   +1 more source

Volume-Preserving flow by powers of the mth mean curvature in the hyperbolic space [PDF]

open access: yes, 2013
This paper concerns closed hypersurfaces of dimension $n(\geq 2)$ in the hyperbolic space ${\mathbb{H}}_{\kappa}^{n+1}$ of constant sectional curvature $\kappa$ evolving in direction of its normal vector, where the speed is given by a power $\beta (\geq ...
Guo, Shunzi, Li, Guanghan, Wu, Chuanxi
core  

The Topology of the AdS/CFT/Randall-Sundrum Complementarity

open access: yes, 2001
The background geometries of the AdS/CFT and the Randall-Sundrum theories are locally similar, and there is strong evidence for some kind of "complementarity" between them; yet the global structures of the respective manifolds are very different. We show
Aharony   +38 more
core   +4 more sources

Four-manifolds of Pinched Sectional Curvature

open access: yes, 2019
In this paper, we study closed four-dimensional manifolds. In particular, we show that under various new pinching curvature conditions (for example, the sectional curvature is no more than 5/6 of the smallest Ricci eigenvalue) then the manifold is ...
Cao, Xiaodong, Tran, Hung
core  

Latent disconnectome prediction of long-term cognitive-behavioural symptoms in stroke. [PDF]

open access: yesBrain, 2023
Talozzi L   +11 more
europepmc   +1 more source

On the geometry of cohomogeneity one manifolds with positive curvature

open access: yes, 2007
This is a survey on cohomogeneity one manifolds with positive curvature. We discuss the known examples of this type and their geometry and the functions that describe the metric. We also describe the classification of cohomogeneity one manifolds that can
Ziller, Wolfgang
core   +1 more source

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