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Abstract Galaxy formation is a two-step process . The gravitational instability of primordial density fluctuations forms dark matter halos. The collapse of gas into matter halos forms luminous galaxies. Semi-analytical modeling treats these two steps …

Abstract Galaxies begin to glow when ordinary matter collapses into pre-existing dark matter halos, forming stars. Initially, the universal fraction of ordinary matter is 17   %, but due to feedback phenomena from star formation (supernovae, stellar …

This lecture has been rescheduled for Wednesday, January 25, from 2 to 4 p.m. Exceptionally, Prof. Esther Duflo will give her last two lectures on Thursday January 26 and Friday January 27, at 2 pm (Marguerite de Navarre …

Abstract We propose to " start from literary situations and try to extend their intelligence on our ways of dealing with life ", by making " a look at speech and a look at ecology ". Indeed, talking about the world plays an active part in our relationship …

Abstract This year's lecture will be devoted to Paul Valéry, and initially to a rediscovered work : Valéry's lectures at the Collège de France (1937-1945). Valéry's chair was entitled " Poétique ", a word to be understood in its etymological sense (it is …

Abstract Much scholarly attention has focused on the military and defensive character of Rome's frontier provinces, with trade recognized as a significant element only in rare or exceptional cases (India, Silk Road). Based on a study focusing on the …

Abstract I will review the role of the quantum unique ergodicity (QUE) notion of delocalization, in the context of random matrices. QUE can be proved by dynamic or combinatorial methods, and implies that the local eigenvalues statistics exhibit the …

In his Supplément au Voyage de Bougainville , Diderot evokes the presence of Ahutoru, the Tahitian brought back by Bougainville from his voyage around the world (1766-1769), but denies him any ability to understand what is happening to him, to make sense …

After outlining the essential results of spin glass theory , the archetype of disordered systems in statistical physics , I'll show how these general concepts apply to systems as diverse as random proteins and heteropolymers , neural networks and …

Abstract Breakdowns : depressions, breakdowns, failures, but also deconstructions, decompositions, dismantlings. In synthesis : collapses and attempts to bind disrupted affects. We'll be talking about stylistic fragmentation, traumatic dissociations, …

Although there are many stories that are partially or completely silent, most comic strip authors consider writing to be a fundamental element, inseparable from the graphic work of the frame and panel. Text often counts as much for its size, shape and …

Françoise Davoine Agrégée de lettres classiques, Doctor in Sociology, Françoise Davoine was a member of Alain Touraine's Centre d'études des mouvements sociaux at EHESS, where, with Jean-Max Gaudillière, she held a weekly seminar for forty years on " la …

The seminar is integrated with the lecture, and the two are combined in a single session. Apart from a very brief introduction, the lecture consists of a screening of the two-hour film Histoires de fous, devoted to the problems of madness caused by the …

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Abstract The hydrodynamic reformulation of quadratic optimal transport extends quite naturally to Einstein's equations in vacuum, at the cost of matrix density and velocity fields and a multidimensional time variable. By adding the cosmological constant, …

In the space of a few decades, the recording of neurons in the animal and human brain has been revolutionized by the emergence of massively parallel electrophysiology and optical imaging techniques, which capture the responses of hundreds or even …