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Nombre de programmes trouvés : 927

Conférences

le 28/06/2016 (1h1m46s)

David Gabai - Maximal cusps of low volume

With Robert Haraway, Robert Meyerhoff, Nathaniel Thurston and Andrew Yarmola.We address the following question. What are all the 1-cusped hyperbolic 3-manifolds whose maximal cusps have low volume?  Among other things we will outline a proof that the figure-8 knot complement and its sister are the 1-cusped manifolds with minimal maximal cusp volume.

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Conférences

le 27/06/2016 (50m24s)

Daniel Ketover - Sharp entropy bounds of closed surfaces and min-max theory

In 2012, Colding-Ilmanen-Minicozzi-White conjectured that the entropy of any closed surface in R^3 is at least that of the self-shrinking two-sphere. I will explain joint work with X. Zhou where we interpret this conjecture as a parabolic version of the Willmore problem and give a min-max proof of (most cases) of their conjecture.

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Conférences

le 27/06/2016 (54m55s)

Laurent Mazet - Minimal hypersurfaces of least area

In this talk, I will present a joint work with H. Rosenberg where we give a characterization of the minimal hypersurface of least area in any Riemannian manifold. As a consequence, we give a lower bound for the area of a minimal surface in a hyperbolic 3-manifold.

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Cours magistraux

le 20/06/2016 (1h31m39s)

Robert Young - Quantitative geometry and filling problems (Part 1)

Plateau's problem asks whether there exists a minimal surface with a given boundary in Euclidean space. In this course, we will study related problems in broader classes of spaces and ask what the asymptotics of filling problems tell us about the geometry of surfaces in groups and spaces. What do minimal and nearly minimal surfaces look like in different spaces, and how is the geometry of surfaces related to the geometry of the ambient space? Our main examples will arise from geometric group theory, including nilpotent groups and symmetric spaces.

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Cours magistraux

le 21/06/2016 (1h25m39s)

Robert Young - Quantitative geometry and filling problems (Part 2)

Plateau's problem asks whether there exists a minimal surface with a given boundary in Euclidean space. In this course, we will study related problems in broader classes of spaces and ask what the asymptotics of filling problems tell us about the geometry of surfaces in groups and spaces. What do minimal and nearly minimal surfaces look like in different spaces, and how is the geometry of surfaces related to the geometry of the ambient space? Our main examples will arise from geometric group theory, including nilpotent groups and symmetric spaces.

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Cours magistraux

le 22/06/2016 (1h29m6s)

Robert Young - Quantitative geometry and filling problems (Part 3)

Plateau's problem asks whether there exists a minimal surface with a given boundary in Euclidean space. In this course, we will study related problems in broader classes of spaces and ask what the asymptotics of filling problems tell us about the geometry of surfaces in groups and spaces. What do minimal and nearly minimal surfaces look like in different spaces, and how is the geometry of surfaces related to the geometry of the ambient space? Our main examples will arise from geometric group theory, including nilpotent groups and symmetric spaces.

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Cours magistraux

le 23/06/2016 (1h23m14s)

Robert Young - Quantitative geometry and filling problems (Part 4)

Plateau's problem asks whether there exists a minimal surface with a given boundary in Euclidean space. In this course, we will study related problems in broader classes of spaces and ask what the asymptotics of filling problems tell us about the geometry of surfaces in groups and spaces. What do minimal and nearly minimal surfaces look like in different spaces, and how is the geometry of surfaces related to the geometry of the ambient space? Our main examples will arise from geometric group theory, including nilpotent groups and symmetric spaces.

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Cours magistraux

le 23/06/2016 (1h28m36s)

Robert Young - Quantitative geometry and filling problems (Part 5)

Plateau's problem asks whether there exists a minimal surface with a given boundary in Euclidean space. In this course, we will study related problems in broader classes of spaces and ask what the asymptotics of filling problems tell us about the geometry of surfaces in groups and spaces. What do minimal and nearly minimal surfaces look like in different spaces, and how is the geometry of surfaces related to the geometry of the ambient space? Our main examples will arise from geometric group theory, including nilpotent groups and symmetric spaces.

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Reportages

le 11/06/2010 (3m35s)

Chef d'Entreprise - AlyXan

...Michel Heningert, chef d'entreprise dans le domaine de l'analyse d'éléments à faible concentraton dans l'environnement, présente le quotidien de son métier et ses perspectives d'évolution...

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Cours magistraux

le 20/06/2014 (1h59m16s)

Christian Gérard - Introduction to field theory on curved spacetimes (Part 1)

...The aim of these lectures is to give an introduction to quantum field theory on curved spacetimes, from the point of view of partial differential equations and microlocal analysis. I will concentrate on free fields and quasi-free states, and say...

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