Based on QR~\ike décomposition with column pivoting, a new and efficient numerical method for solving symmetrie matrix inverse eigenvalue problems is proposed, which is suitable for both the distinct and multiple eigenvalue cases. A locally quadratic convergence analysis is given. Some numerical experiments are presented to illustrate our results. Résumé. Basée sur la décomposition QR-iype avec...

— Component mode synthesis belongs to the class ofGalerkin methods and enables to compute the eigenpairs of a differential operator on a domain that can be subdivided into different subdomains on each ofwhichpartofthe eigenpairs of the same operator are assumed to be known. Energy transfer between subdomains is achieved thanks to functions defined on the whole domain and called « static modes »...

We prove the existence of Białynicki-Birula decomposition for Kempf monoids , which form a large class that contains all with reductive unit group in characteristics. This extends statements from [11] [1] . On prouve l'existence de la décomposition pour les monoïdes qui forment une classe contenant tous avec groupe des unités réductif dans toutes caractéristiques. Ça étends énoncés d'existence

Breakdown of woody debris in river and upland habitats as well as the interactions between wood and invertebrates have been well described. Studies of wood in wetlands are rare, and far less is known about breakdown and invertebrate use of wood in these transitional habitats. This study experimentally assessed breakdown and invertebrate colonization of wood in a floodplain wetland and directly ...

We worked on clique minimal separator decomposition. In order to compute this decomposition on a graph G we need to compute the minimal separators of its triangulation H. In this context, the first efforts were on finding a clique minimal separators in a chordal graph. We defined a structure called atom tree inspired from the clique tree to compute and represent the final products of the decomp...

– We show that the Lyapunov exponents of volume preserving C1 diffeomorphisms of a compact manifold are continuous at a given diffeomorphism if and only if the Oseledets splitting is either dominated or trivial. It follows that for a C1-residual subset of volume preserving diffeomorphisms the Oseledets splitting is either dominated or trivial. We obtain analogous results in the setting of sympl...