Quelle(s) responsabilité(s) pour les finances solidaires ?

Quelles relaxations continues pour le critère l 2 − l 0 ?

For more than two decades, several continuous (and generally separable) penalties approximating (relaxing) the `0-pseudo norm have been proposed. Although some “good” properties for such penalties have been highlighted, the choice of one relaxation rather than another one remains unclear. One approach to compare them is to investigate their fidelity to the initial problem. In other words, do th...

Toposes pour les nuls

The \generalized universe of sets" aspect of toposes is relatively easy to understand and is well documented in the literature: start with Goldblatt [1] and proceed via Mac Lane and Moerdijk [5], or MacLarty [4], to Johnstone [2]. The basic trick is to use categorical properties to characterize set-theoretic constructions in the category of sets, and thence to transfer them to other categories ...

Disabilities through the Capability Approach Lens: Implications for public policies Handicap au travers de l’approche par les Capabilités: Quelles implications pour les politiques publiques ?

Descente pour les n-champs

We develop the theory of n-stacks (or more generally Segal n-stacks which are∞-stacks such that the morphisms are invertible above degree n). This is done by systematically using the theory of closed model categories (cmc). Our main results are: a definition of n-stacks in terms of limits, which should be perfectly general for stacks of any type of objects; several other characterizations of n-...

Interopérabilité sémantique libérale pour les services et les objets

Résumé. Le Web des données promeut l’utilisation de RDF comme modèle pour les données structurées sur le Web. Cependant, la majorité des services Web consomment et exposent principalement du CSV, JSON, ou XML, des format non-RDF. Il est peu probable que tous ces services se convertissent un jour aux formats RDF existants. Ceci est d’autant plus vrai dans le contexte du Web des objets, puisque l...