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Documents and media Download support Abstract Is it still possible to read ? In France, Europe and beyond, the most recent surveys reveal a decline in the number of readers and reading time in the general population, and particularly among young people, …

Abstract Stars play an essential role in the history of our Universe. Stars synthesize heavy elements such as oxygen and carbon, which are essential for life. Stars also inject energy into galaxies in the form of radiation and motion. Finally, stars orbit …

Abstract Everyone knows that tolerance lies at the heart of Enlightenment thinking. But has the extent of the pluralistic dynamic that this new demand is creating at the heart of European consciousness  been fully appreciated? Starting with Pierre Bayle …

Abstract Stars with masses of less than 8 solar masses do not have sufficient temperature to ignite carbon fusion , and end their lives as white dwarfs, compact cores after ejection from their envelopes in planetary nebulae. The core is stabilized against …

Abstract I will start to motivate a few recent results on Poincaré series from a naive personal viewpoint. Then I will report on joint work with Yannick Bonthonneau, Matthieu Léautaud, Gabriel Rivière where we consider Poincaré series on the torus which …

Abstract We will complete the calculation of Ruelle resonances of a compact hyperbolic surface, started in the last lecture, using the representation theory of PSL(2, R). The case of principal series will be treated in detail. We'll calculate the Fourier …

Abstract The development of architectures exploiting " deep " neural learning methods in machine translation has led to a considerable increase in the acceptability and usability of machine-computed translations. These new architectures have also made it …

Abstract What current migration owes to colonization Migration " regional ", intercontinental migration Neither denial nor repentance, but facing up to our shared …

Abstract History of the discipline, recent approaches. Current challenges : cover less endowed languages ; take context into account ; be robust to linguistic …

Abstract Systems of particles are naturally described in a Lagrangian way : the unknowns (positions, velocities...) are related to the entities, numbered once and for all, and the Euclidean frame in this Lagrangian framework is very well adapted to the …

Abstract The world's poorest people face a multitude of risks, exacerbated by climate change. How are they protected ? How will they be protected in the …

Program 09:30 → 10:20 - On the Tits Alternative and its Refinements I shall present Tits' original statement and method of proof of his celebrated alternative for finitely generated linear groups and present various refinements that have been obtained …