depuis les années 1990, une nouvelle visée critique est venue enrichir la liste déjà riche des perspectives de recherches appliquées à la littérature. aux investigations de type historique, textuelle, sociologique, etc. est venue s’ajouter une tendance critique aux contours encore indéfinis, mais dont la volonté première est de valoriser le rapport parfois apparent, souvent implicite, entre la ...

Kinematic and geometric constraints, servomechanisms and control of mechanical systems En hommage amical au Professeur Tulczyjew, dont les travaux sont une source constante d'inspiration.

Let (R , ‖ · ‖) be the space R equipped with a norm ‖ · ‖ whose unit ball has a bounded volume ratio with respect to the Euclidean unit ball. Let Γ be any random N×n matrix with N > n, whose entries are independent random variables satisfying some moment assumptions. We show that with high probability Γ is a good isomorphism from the n-dimensional Euclidean space (R, | · |) onto its image in (R...

{ We show that there exists a toric curve in P 8 , whose homogeneous coordinate ring has a presentation with 12 quadratic relations and whose Poincar e-Betti series is irrational. The example was found by a computer search, aiming at a homological classiication of those toric curves that have a quadratic presentation in P n?1 for n 9. Some other consequences of this search are also presented. U...