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Exceptionally, the lecture takes place on Tuesdays. Abstract The complex structure of the Kuiper Belt suggests that the primordial disk of planetesimals was sculpted by irreversible orbital changes of the giant planets. Once the gas in the disk has …
16:45 to 18:45
Event
Documents and media Download support …
10:00 to 11:30
Event
The lecture is cancelled and will be rescheduled at a later date. …
14:00 to 15:30
Event
Abstract Ozone is a very minor atmospheric gas that protects life on Earth from the Sun's harmful ultraviolet rays. Its concentration is highest in the ozone layer located between 15 and 35 km above the Earth's surface. The fragile balance of ozone has …
11:00 to 12:00
Event
Abstract Although atmospheric composition has varied over very long time scales, today's atmosphere is essentially made up of nitrogen ( N2 ) and oxygen ( O2 ). The impact of human activity on the concentration of these gases is measurable but negligible. …
10:00 to 11:00
Event
This lecture, moved to 3 rue d'Ulm, has not been recorded. Abstract We continue our study of large random regular graphs by describing their diameters. We also prove B. Bollobás' theorem : the number of closed geodesics of given length on such a graph …
10:00 to 12:00
Event
Guillaume Cuchet: "Recent trends in French Catholicism" Vincent Tiberj: "The muslims next door: the diversity of a religious minority" …
10:00 to 12:00
Event
Documents and média Download support …
14:00 to 16:00
Event
Abstract We present i) a necessary and sufficient condition of optimality for transport and ii) a regularization of Wasserstein distances. …
11:15 to 12:30
News
Seaweed farming against gender inequality and climate change, woman working on the beach Between the most affluent and the most precarious, between the countries of the North and those of the South, between the cities and the countryside... climate change …
Published on 18 September 2025
Event
Abstract This seminar will explore in detail the physical properties of Jupiter's Trojans. It will present NASA's LUCY mission, launched in 2021, which will encounter five Trojan objects between 2027 and 2033. We will also discuss the exciting discovery …
17:45 to 18:45
Event
One-hour lecture , followed by the seminar. Abstract After a brief introduction to the properties of the giant planets, we'll describe their satellite populations, focusing on the so-called " irregular " satellites due to their eccentric and inclined …
16:45 to 17:45
News
A topical scientific subject is explored by a researcher from the Collège de France. Paul Roger Bassong Is there such a thing as the universality of human language ? By decentralizing the way linguistics looks at itself, the study of African languages is …
Published on 18 September 2025
News
Expression of a " finger gene " in a fish fin 380 million years ago, Our Ancestors the fish began to colonize dry land, evolving into numerous vertebrate species equipped with hands and feet for locomotion. Understanding how these structures evolved …
Published on 18 September 2025
François-Marie Bréon
The disrupted carbon cycle
François-Marie Bréon
The disrupted carbon cycle
Opening lecture
Event
Abstract The increase in atmospheric CO2 concentration is the main cause of the global warming observed over the last fifty years. However, the quantities of fossil carbon extracted from the subsoil and injected into the atmosphere are small compared …
18:00 to 19:00
François Charton
Artificial intelligence and mathematics - How language models learn arithmetic
François Charton
Artificial intelligence and mathematics - How language models learn arithmetic
Seminar
Event
14:00 to 15:00