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Le Périple de la mer Erythrée  : les voyages en Inde et en Afrique orientale (suite). The question of Rhapta, the last emporion on the east coast of Africa. Libyan voyages (Phoenician, Egyptian, Persian). Hannon's journey . The circumnavigations of …

Continuing in the second lecture, we progressively established the essential elements for building tomographic models of the Earth's mantle : types of data, level of approximation of wave propagation theory, physical and geometric parameterization of the …

The second unit of the lecture focused on the evolutionary propagation of information, as seen through the classical model of Manfred Eigen, in which sequences reproduce with errors in a flow reactor. The model gives rise to a system of differential …

Edith Heard is Professor at the Collège de France. Trained as a geneticist, she heads the Genetics and Developmental Biology Unit and the Mammalian Epigenesis and Development team at the Institut Curie. For several years, she has been studying epigenetic …

The African continent : some problems of representation and naming. How the " imago " of Africa is constructed : medieval European maps. The representation of Africa in planispheres from the Ptolemaic tradition to the Renaissance. The words " Africa " and …

The first lecture provided a brief reminder of the wave equation and its solutions in an isotropic or anisotropic elastic medium, as well as the different types of seismic waves, and grape theory, which makes it possible to follow the path of …

The first unit of the lecture dealt with the evolutionary problem of phenotypic innovation, i.e. trying to understand why the consequences of random genetic mutations are not random. One answer is that the modification of a phenotype is made possible by …