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Simulation d’une sphère tractée à vitesse constante dans une couche de grains sphériques. Il s’agit d’étudier les propriétés de la zone granulaire dense apparaissant autour de la sphère en mouvement :  forces et rhéologie locale.

© Sylvain FAURE, LMO (CNRS / Université Paris-Sud), Aline LEFEBVRE, CMAP (CNRS / Ecole Polytechnique), Bertrand MAURY, DMA (ENS / CNRS)

• Rubrique INSMI

© Arnaud CHERITAT/CC BY-SA/CNRS / © Jérôme CHATIN/CNRS Photothèque / © Equipe EDP et Nano-D (Inria/LJK) / © Equipes EDP (LJK) et EVASION (Inria/LJK)

• Rubrique RECHERCHE

© Fondation Mathématique Jacques Hadamard https://www.fondation-hadamard.fr

Remerciements à Flaviana Iurlano.

• Rubrique INTERACTIONS

This is a rendering that replicates the results of experiments in chaotic scattering. The basic setup is four identical, highly reflective balls sitting in a pyramid formation so that each ball touches every other ball. If you look into the gaps between three balls, the reflected images you see make up a three dimensional fractal that has what is known as the Wada Property after the Japanese mathematician who studied such spatial divisions in 1917. The Wada Property refers to a discrete dynamical system having three basins of attractions that are so intertwined that every point on one basin boundary is also on the boundary of all other basins. The image was assembled and rendered in Bryce.

© Wada Basins by Luc BENARD - Imaginary - Open Mathematics

• Rubrique INTERNATIONAL

© Comunicaciones CMM - Chili

© CRM - Montréal

© Eurandom - Eindhoven

© IFCAM - Bangalore

© IMPA - Rio de Janeiro

© Imperial College London - Londres

© Institut Wolfgang Pauli - Vienne

© LASOL - Mexique

© Photographs Courtesy of the Pacific Institute for the Mathematical Sciences - Canada

© Scuola Normale Superiore - Pise