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In this paper we give some results about minimal generating systems of a monoïd M. The main tool is a relation denoted “S” which is finer than the relation “J”.  相似文献   

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In this paper, we reduce the Levi Problem for open sets in a locally trivial holomorphic bundle on a Stein manifold with compact homogeneous fibre, to the Levi Problem in the fibres of the bundle.  相似文献   

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We define Nevanlinna classes in strictly pseudoconvex domains that are not necessarily smooth. If the boundary is defined by a Morse function we give sufficient conditions of Blaschke type for an analytic set to be the zero set of a function in a given Nevanlinna class. In particular, in the case of a smooth boundary we obtain new and rather explicit proofs of the theorems of Henkin-Skoda and Dautov-Henkin.  相似文献   

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Dans cet article, nous prouvons Pexistence et Punicite du processus de champ moyen par une methode de martingales. Pour ce processus nous caracterisons les mesures invariantes et leur domaine d'attraction. Nous montrons que la limite “thermodynamique” des processus de champ moyen a volume fini est le processus de champ moyen. Enfin nous montrons que les mesures invarianted a volume fini convergent et caracterisons la limite.  相似文献   

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Sans résumé Ce travail a été partiellement subventionné par le Fonds National Suisse pour la Recherche scientifique.  相似文献   

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The purpose of this paper is, first to define the Maslov invariant in the U-theory, the intermediate theory between real K-theory and complex K-theory, whose vanishing is a necessary and sufficient condition for the stable transversality of two Lagrangian sub-bundles of a symplectic fiber bundle. The second purpose is to show, in conformity with Bott periodicity, that Chern, Pontryand Stiefel-Whitney classes are precise enough to play the same role as the Maslov classes when one replaces the base space X of the symplectic bundle, by S 7 X +the seventh topological suspension of X +the compactification of X.  相似文献   

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Sans résuméDédié au ProfesseurG. Alexits pour son 70e anniversaire  相似文献   

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