Workshop : Is the shortest way always the fastest?
Aurélien Alvarez is a professor at ENS Lyon. He is particularly interested in geometry, topology, and dynamic systems. He also works to train primary-school teachers as part of his work with the foundation La Main à la Pâte, and he devotes a considerable amount of time to making math accessible. In particular, he is the editor-in-chief of the online periodical Images des Mathématiques.
Does a marble fall faster if it is heavier?