48 résultats : curvature constraints and spaces of metrics

Attention : l'accès aux ressources peut être restreint, soit pour des raisons juridiques, soit par la volonté de l'auteur.
48 résultats
page 5 sur 5
résultats 41 à 48
Canal-U
Description : I will discuss the notion of minimal volume and some of its variants. The minimal volume of a manifold is defined as the infimum of the volume over all metrics with sectional curvature between -1 and 1. Such an invariant is closely related to "collapsing theory", a far reaching set of results ...
Mots clés : Grenoble, eem2021, contraintes de courbures et espaces métriques, curvature constraints and spaces of metrics, minimal volume
Date : 24-06-2021
Droits : Droits réservés à l'éditeur et aux auteurs. CC BY-NC-ND 4.0
Canal-U
Description : We introduce various notions of convergence of Riemannian manifolds and metric spaces.  We then survey results and open questions concerning the limits of sequences of Riemannian manifolds with uniform lower bounds on their scalar curvature.   We close the course by presenting methods and t ...
Mots clés : Grenoble, eem2021, contraintes de courbures et espaces métriques, curvature constraints and spaces of metrics, intrinsic flat, Gromov-Hausdorff convergence
Date : 25-06-2021
Droits : Droits réservés à l'éditeur et aux auteurs. CC BY-NC-ND 4.0
Canal-U
Description : We introduce various notions of convergence of Riemannian manifolds and metric spaces.  We then survey results and open questions concerning the limits of sequences of Riemannian manifolds with uniform lower bounds on their scalar curvature.   We close the course by presenting methods and t ...
Mots clés : Grenoble, eem2021, contraintes de courbures et espaces métriques, curvature constraints and spaces of metrics, intrinsic flat, Gromov-Hausdorff convergence
Date : 21-06-2021
Droits : Droits réservés à l'éditeur et aux auteurs. CC BY-NC-ND 4.0
Canal-U
Description : We introduce various notions of convergence of Riemannian manifolds and metric spaces.  We then survey results and open questions concerning the limits of sequences of Riemannian manifolds with uniform lower bounds on their scalar curvature.   We close the course by presenting methods and t ...
Mots clés : Grenoble, eem2021, contraintes de courbures et espaces métriques, curvature constraints and spaces of metrics, intrinsic flat, Gromov-Hausdorff convergence
Date : 22-06-2021
Droits : Droits réservés à l'éditeur et aux auteurs. CC BY-NC-ND 4.0
Canal-U
Description : We introduce various notions of convergence of Riemannian manifolds and metric spaces.  We then survey results and open questions concerning the limits of sequences of Riemannian manifolds with uniform lower bounds on their scalar curvature.   We close the course by presenting methods and t ...
Mots clés : Grenoble, eem2021, contraintes de courbures et espaces métriques, curvature constraints and spaces of metrics, intrinsic flat, Gromov-Hausdorff convergence
Date : 24-06-2021
Droits : Droits réservés à l'éditeur et aux auteurs. CC BY-NC-ND 4.0
Canal-U
Description : Over the last fifty years, the problem of finding sharp upper bounds for area-normalized Laplacian eigenvalues on closed surfaces has attracted the attention of many geometers, due in part to connections to the study of sphere-valued harmonic maps and minimal immersions. In this talk, I'll d ...
Mots clés : Grenoble, eem2021, contraintes de courbures et espaces métriques, curvature constraints and spaces of metrics, harmonic map, spectral geometry
Date : 01-07-2021
Droits : Droits réservés à l'éditeur et aux auteurs. CC BY-NC-ND 4.0
Canal-U
Description : I will present a joint work with G. Carron and I. Mondello where we study Kato limit spaces. These are metric measure spaces obtained as Gromov-Hausdorff limits of smooth n-dimensional Riemannian manifolds with Ricci curvature satisfying a uniform Kato-type condition. In this context, strictly ...
Mots clés : Grenoble, eem2021, contraintes de courbures et espaces métriques, curvature constraints and spaces of metrics, Riemannian manifolds, Kato condition
Date : 02-07-2021
Droits : Droits réservés à l'éditeur et aux auteurs. CC BY-NC-ND 4.0
Canal-U
Description : In this talk, we shall describe some topological rigidity and its relationship with positive scalar curvature. Precisely, we will present a proof that a complete contractible 3-manifold with positive scalar curvature is homeomorphic to the Euclidean 3-space. We will furthermore explain the i ...
Mots clés : Grenoble, scalar curvature, eem2021, contraintes de courbures et espaces métriques, curvature constraints and spaces of metrics,, rigidity
Date : 01-07-2021
Droits : Droits réservés à l'éditeur et aux auteurs. CC BY-NC-ND 4.0