Babel : avant, après

Avant Propos

Avant-propos.

Kantorovitch's theorem gives su cient conditions for the convergence of Newton's method. We presenta full formalization of this theorem in the case of a real function. The work is accomplished inside the Coqproof assistant and it is based on the Reals library provided by the theorem prover. For the general case ofthe theorem we rst describe a way to represent concepts from multivari...

Babel

Routing and switching capabilities of computer networks seem as the closed environment containing a limited set of deployed protocols, which nobody dares to change. The majority of wired network designs are stuck with OSPF (guaranteeing dynamic routing exchange on network layer) and RSTP (securing loop-free data-link layer topology). Recently, more use-case specific routing protocols, such as B...

Science Avant-Garde

o think that the neoimpressionists are painters who cover canvases with little multicolored spots is a rather widespread mistake, " wrote Paul Signac in his manifesto of their movement. " This mediocre dot method has nothing to do with the aesthetic of the painters we are defending here, nor with the technique of divisionism they use. " Signac was referring to, among others, Georges Seurat, who...

Méningite après rachianesthésie

Résumé Les méningites sont des complications rares mais graves des anesthésies péridurales et des rachianesthésies. Les méningites bactériennes sont essentiellement dues à des cocci à Gram positif, ce qui sous-entend une contamination exogène pouvant être le témoin d'une faute d'asepsie. L'évolution est le plus souvent favorable sous traitement, mais au prix d'un accroissement des dépenses de s...