2021

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Mise en ligne : 02 juillet 2021
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J. Fine - Knots, minimal surfaces and J-holomorphic curves

Vidéos

D. Stern - Harmonic map methods in spectral geometry
Conférence
01:00:08

D. Stern - Harmonic map methods in spectral geometry

Stern
Daniel

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

A. Lytchak - Convex subsets in generic manifolds
Cours/Séminaire
00:52:01

A. Lytchak - Convex subsets in generic manifolds

Lytchak
Alexander

In the talk I would like to discuss some  statements and questions about convex subsets and convex hulls in generic Riemannian manifolds of dimension at least 3. The statements, obtained jointly

A. Song - What is the (essential) minimal volume? 4
Cours/Séminaire
01:25:34

A. Song - What is the (essential) minimal volume? 4

Song
Antoine

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

A. Song - What is the (essential) minimal volume? 3
Cours/Séminaire
01:26:57

A. Song - What is the (essential) minimal volume? 3

Song
Antoine

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

A. Song - What is the (essential) minimal volume? 2
Cours/Séminaire
01:23:08

A. Song - What is the (essential) minimal volume? 2

Song
Antoine

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

A. Song - What is the (essential) minimal volume? 1
Cours/Séminaire
01:23:08

A. Song - What is the (essential) minimal volume? 1

Song
Antoine

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

T. Richard - Advanced basics of Riemannian geometry 4
Cours/Séminaire
01:34:50

T. Richard - Advanced basics of Riemannian geometry 4

Richard
Thomas

We will present some of the tools used by the more advanced lectures. The topics discussed will include : Gromov Hausdorff distance, comparison theorems for sectional and Ricci curvature, the

T. Richard - Advanced basics of Riemannian geometry 3
Cours/Séminaire
01:30:19

T. Richard - Advanced basics of Riemannian geometry 3

Richard
Thomas

We will present some of the tools used by the more advanced lectures. The topics discussed will include : Gromov Hausdorff distance, comparison theorems for sectional and Ricci curvature, the

T. Richard - Advanced basics of Riemannian geometry 2
Cours/Séminaire
01:21:32

T. Richard - Advanced basics of Riemannian geometry 2

Richard
Thomas

We will present some of the tools used by the more advanced lectures. The topics discussed will include : Gromov Hausdorff distance, comparison theorems for sectional and Ricci curvature, the

T. Richard - Advanced basics of Riemannian geometry 1
Cours/Séminaire
01:30:43

T. Richard - Advanced basics of Riemannian geometry 1

Richard
Thomas

We will present some of the tools used by the more advanced lectures. The topics discussed will include : Gromov Hausdorff distance, comparison theorems for sectional and Ricci curvature, the

P. Castillon - CAT(k)-spaces 4
Cours/Séminaire
01:20:14

P. Castillon - CAT(k)-spaces 4

Besson
Gérard
Castillon
Philippe

The purpose of this course is to introduce the synthetic treatment of sectional curvature upper-bound on metric spaces. The basic idea of A.D. Alexandrov was to characterize the curvature bounds

P. Castillon - CAT(k)-spaces 3
Cours/Séminaire
01:35:14

P. Castillon - CAT(k)-spaces 3

Besson
Gérard
Castillon
Philippe

The purpose of this course is to introduce the synthetic treatment of sectional curvature upper-bound on metric spaces. The basic idea of A.D. Alexandrov was to characterize the curvature bounds

P. Castillon - CAT(k)-spaces 2
Cours/Séminaire
01:34:16

P. Castillon - CAT(k)-spaces 2

Besson
Gérard
Castillon
Philippe

The purpose of this course is to introduce the synthetic treatment of sectional curvature upper-bound on metric spaces. The basic idea of A.D. Alexandrov was to characterize the curvature bounds

G. Besson - CAT(k)-spaces 1
Cours/Séminaire
01:33:38

G. Besson - CAT(k)-spaces 1

Besson
Gérard
Castillon
Philippe

The purpose of this course is to introduce the synthetic treatment of sectional curvature upper-bound on metric spaces. The basic idea of A.D. Alexandrov was to characterize the curvature bounds

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