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Nombre de programmes trouvés : 3925
Conférences

le (56m38s)

La fin du capitalisme ?

Dans cette conférence, Thomas Piketty s’interroge sur la signification d’une possible « fin du capitalisme », ou plus précisément sur le type de transformation des rapports de propriété – ou de retour à des formes de rapports antérieurs – que sous-tendent les évolutions en cours. Pour cela, il remet dans une perspective longue l’histoire des différentes formes de possession et de structures inégalitaires. Dans le prolongement des réflexions engagées dans son ouvrage « Le capital au XXIe siècle », il analyse en particulier la signification de tendances récentes telles que la remontée de la concentration des patrimoines et des ...
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Cours magistraux

le (1h9m14s)

P. Hubert - Rauzy gasket, Arnoux-Yoccoz interval exchange map, Novikov's problem (Part 1)

1. Symbolic dynamics: Arnoux - Rauzy words and Rauzy gasket2. Topology: Arnoux - Yoccoz example and its generalization3. Novikov’s problem: how dynamics meets topology and together they help to physics4. Lyapunov exponents for the Rauzy gasket: what do we know about them5. Multidimensional fraction algorithms: why do they care6. Open problem session (sometimes, say, more than 30 years open!)
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Cours magistraux

le (1h9m14s)

C. Leininger - Teichmüller spaces and pseudo-Anosov homeomorphism (Part 1)

I will start by describing the Teichmuller space of a surface of finite type from the perspective of both hyperbolic and complex structures and the action of the mapping class group on it.  Then I will describe Thurston's compactification of Teichmuller space, and state his classification theorem.  After that, I will focus on pseudo-Anosov homeomorphisms, describe a little bit about their dynamics, and discuss the geometry/dynamics of the associated mapping tori.
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Cours magistraux

le (59m19s)

J. Aramayona - MCG and infinite MCG (Part 1)

The first part of the course will be devoted to some of the classical results about mapping class groups of finite-type surfaces. Topics may include: generation by twists, Nielsen-Thurston classification, abelianization, isomorphic rigidity, geometry of combinatorial models. In the second part we will explore some aspects of "big" mapping class groups, highlighting the analogies and differences with their finite-type counterparts, notably around isomorphic rigidity, abelianization, and geometry of combinatorial models.
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Cours magistraux

le (1h8m38s)

C. Leininger - Teichmüller spaces and pseudo-Anosov homeomorphism (Part 2)

I will start by describing the Teichmuller space of a surface of finite type from the perspective of both hyperbolic and complex structures and the action of the mapping class group on it. Then I will describe Thurston's compactification of Teichmuller space, and state his classification theorem. After that, I will focus on pseudo-Anosov homeomorphisms, describe a little bit about their dynamics, and discuss the geometry/dynamics of the associated mapping tori.
Voir la vidéo
Cours magistraux

le (1h41m56s)

P. Hubert - Rauzy gasket, Arnoux-Yoccoz interval exchange map, Novikov's problem (Part 2)

1. Symbolic dynamics: Arnoux - Rauzy words and Rauzy gasket2. Topology: Arnoux - Yoccoz example and its generalization3. Novikov’s problem: how dynamics meets topology and together they help to physics4. Lyapunov exponents for the Rauzy gasket: what do we know about them5. Multidimensional fraction algorithms: why do they care6. Open problem session (sometimes, say, more than 30 years open!)
Voir la vidéo

 
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