In this paper we consider a wave equation on a bounded domain Ω of Rn, with non homogeneous boundary Dirichlet data g supported on a part of the boundary, and we prove an observability estimate of this data from the
L'algèbre d'incidence d'un ensemble ordonné fini sur un corps est de dimension globale finie, bornée par la taille de l'ensemble ordonné, donc sa catégorie dérivée bornée possède ce qu'on appelle un `foncteur de Serre'. On dit qu'un ensemble ordonné est
In some recent advanced protocols, like Zero-Knowledge Proofs (allowing a prover to convince a verifier that he knows a secret without revealing it), or Multi Party Computation, algorithms do not process bit-oriented information, but rather elements of big finite fields
Plus d'information sur la page web du séminaire : http://divizio.joomla.com/sem-diff
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Plus d'information ici : http://divizio.joomla.com/sem-diff
We present a faster dual lattice attack on the Learning with Errors (LWE) problem, based on ideas from coding theory. Basically, it consists in revisiting the most classical dual attack by replacing modulus switching by a decoding algorithm. This replacement
La discrétisation la plus simple de la condition de Neumann au bord d’un segment pour l’équation de la chaleur instationnaire ou stationnaire n’est pas consistante. Cependant, des tests numériques tendent à montrer qu’un schéma d’Euler explicite pour l’équation instationnaire converge. Dans ce
The Fisher information can be used to define a Riemannian metric to compare probability distributions inside a parametric family. The most well-known example is the case of (univariate) normal distributions, where the Fisher information induces hyperbolic geometry. In this talk
Abstract: Consider the following problem, originally posed by Gizatullin: "Which automorphisms of a smooth quartic K3 surface in $P^3$ are induced by Cremona transformations of the ambient space?'' When S is a smooth quartic surface in $P^3$, the pair ($P^3$,S)
