共查询到20条相似文献,搜索用时 15 毫秒
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Yves Raynaud 《Israel Journal of Mathematics》1983,44(1):33-52
We introduce here the notion of superstable Banach space, as the superproperty associated with the stability property of J. L. Krivine and B. Maurey. IfE is superstable, so are theL p (E) for eachp∈[1, +∞[. If the Banach spaceX uniformly imbeds into a superstable Banach space, then there exists an equivalent invariant superstable distance onX; as a consequenceX contains subspaces isomorphic tol p spaces (for somep∈[1, ∞[). We give also a generalization of a result of P. Enflo: the unit ball ofc 0 does not uniformly imbed into any stable Banach space. 相似文献
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Belmesnaoui Aqzzouz Redouane Nouira Larbi Zraoula 《Proceedings of the American Mathematical Society》2006,134(4):1161-1165
Nous donnons des conditions nécessaires et suffisantes pour que tout opérateur de Dunford-Pettis positif sur un treillis de Banach, soit faiblement compact et nous déduisons quelques conséquences.
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Thérèse Merlier 《Semigroup Forum》1971,2(1):64-70
A necessary and sufficient condition is given in order that a lattice-ordered semigroup admit a totally ordered ?-homomorphic image (Theorem 1). This permits us to give (Theorem 2) a necessary and sufficient condition that a lattice-ordered semigroup be representable, that is, that it be ?-isomorphic to a subdirect product of totally ordered semigroups, thereby solving a problem posed by L. Fuchs ([2], p. 289). We also establish a necessary and sufficient condition that a semigroup be an o-semigroup, that is, that it admit a structure of totally ordered semigroup (Theorem 3). 相似文献
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Liviu C. Florescu 《Aequationes Mathematicae》1989,38(2-3):123-145
Summary In this paper we try to argue that it is necessary to replace the topological convergence structure of Menger spaces with an appropriate probabilistic concept of convergence. 相似文献
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Samy Skander Bahoura 《Journal of Functional Analysis》2007,242(2):550-562
We give some a priori estimates for Yamabe equation on Riemannian manifold in dimensions 5 and 6. In dimension 5 we present an inequality of type sup×inf. In dimension 6, we have an estimate if we assume that the infima of the solutions are uniformly bounded below by some positive constant. 相似文献
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Sans résumé 相似文献
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Dr. Pierre Leroux 《Mathematische Zeitschrift》1971,121(4):329-340
Sans résuméA la mémoire de Jean Maranda 相似文献
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