Cet article se propose d'examiner de maniere detaillee les productivites du travail au niveau sectoriel et agrege pour les regions francaises sur la decennie 80. Empruntant aux travaux inities par Baumol, suivis par Barro et Sala-i-Martin notamment, elle enrichit ces derniers en mettant l'accent...

We build spaces of q.p. (quasi-periodic) functions and we establich some of their properties. They are motivated by the Perceival approach to q.p. solutions of Hamiltonian systems. The periodic solutions of an adequat Partial Differential Equation are related to the q.p. solutions of an Ordinar...

For a given finite poset (P,-<), we construct strict completions of P which are models of all finite lattices L such that the set of join-irreducible elements of L is isomorphic to P.