Les dépôts graveleux qui tapissent les plateaux et replats élevés autour de Liège font l’objet d’une étude sédimentologique, mise en rapport avec l’état des connaissances matière stratigraphie l’Oligocène du soulèvement/basculement flanc NO l’Ardenne. Le présent article rapporte généralités données terrain laboratoire ont conduit à construire un modèle inédit l’évolution morpho-sédimentaire rés...

The historical core of interactivism is a model of the nature of representing and representation. This model differs from alternatives in at least two interrelated ways: 1) it offers a dynamic, pragmatic, future oriented, model of representation, in contrast to most alternatives, with far ranging consequences for phenomena that involve representation, such as perception, language, rationality, ...

We introduce and study a family of polytopes which can be seen as a generalization of the permutahedron of type Bd. We highlight connections with the largest possible diameter of the convex hull of a set of points in dimension d whose coordinates are integers between 0 and k, and with the computational complexity of multicriteria matroid optimization.

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We study conditions on a C∗-dynamical system (A,G,α) under which induction of primitive ideals (resp. irreducible representations) from stabilizers for the action of G on the primitive ideal space Prim(A) give primitive ideals (resp. irreducible representations) of the crossed product A⋊α G. The results build on earlier results of Sauvageot [17] and others, and will correct a (possibly overly o...

primitive neuroectodermal tumor (pnet) is usually an aggressive, rapidly progressing and metastasizing tumor. occurrence of this type of tumor in the kidney is considered as unusual and few cases have been reported so far. we present a metastatic pnet arising probably from the kidney in a 17-year-old female patient with local invasion and metastasis to the stomach. pnet should be considered as ...