submitted to "Annales de la faculté de Sciences de Toulouse, Mathématiques"
Document(s)
Title
International audience
International audience
A unified a contrario detection method is proposed to solve three classical problems in clustering analysis. The first one is to evaluate the validity of a cluster candidate. The second problem is that meaningful clusters can contain or be contained ...
15 pages, companion paper of http://hal.ccsd.cnrs.fr/ccsd-00002954
International audience
A factorization of the inverse of a Hermetian positive definite matrix based on a diagonal by diagonal recurrence formulae permits the inversion of Toeplitz Block Toeplitz matrices using minimized matrix-vector products, with a complexity of ((n1)^3)...
21 pages. A companion paper is http://hal.ccsd.cnrs.fr/ccsd-00002955
preuve simplifiée d'un résultat d'Ancona et Ottaviani
We show that the solutions to the non-stationary Navier-Stokesequations in $R^d$, $d=2,3$ which are left invariant under the actionof discrete subgroups of the orthogonal group $O(d)$ decay muchfaster as $|x|\to\infty$ or $ t \to\infty$ than in the g...