A primitive multiple scheme is a Cohen–Macaulay Y such that the associated reduced $$X=Y_{\mathrm{red}}$$ smooth, irreducible, and can be locally embedded in smooth variety of dimension $$\dim (X)+1$$ . If n multiplicity Y, there canonical filtration $$X=X_1\subset X_2\subset \cdots \subset X_n=Y$$ , $$X_i$$ i. The simplest example trivial to line bundle L on X: it nth infinitesimal neighborhoo...

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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