The proof, known to be so hard that a mathematician once offered 10 martinis to whoever could figure it out, uses number ...
Brazilian researchers have developed a technique that estimates the force exerted on each grain of sand in a dune from images ...
Université de Technologie de Compiègne, Roberval (Mechanics, Energy and Electricity), Centre de Recherche Royallieu, 60200 Compiègne, France ...