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Mostrando ítems 241-250 de 509
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Artículo
Geometric properties of Banach spaces and metric fixed point theory
(Universidad de Extremadura, 2002)
Artículo
The Klein–Gordon equation, the Hilbert transform, and dynamics of Gauss-type maps
(European Mathematical Society, 2020)
We study the uncertainty principle associated with the Klein–Gordon equation. As in the previous work [Ann. of Math. 173 (2011)], we consider vanishing along a lattice-cross. The following variants appear naturally: (1) ...
Artículo
Estabilidad de espacios localmente convexos por ultraproductos
(Real Academia de Ciencias Exactas, Físicas y Naturales, 1986)
Estudiamos en este artículo la estabilidad de algunas clases de espacios localmente convexos bajo la formación de ultraproductos. Se demuestra que los espacios bornologicos y ultrabornológicos son estables (teorema 2) pero ...
Artículo
Common fixed points for multimaps in metric spaces
(SpringerOpen, 2010)
We discuss the existence of common fixed points in uniformly convex metric spaces for singlevalued pointwise asymptotically nonexpansive or nonexpansive mappings and multivalued nonexpansive, ∗-nonexpansive, or ε-semicontinuous ...
Artículo
An overview on the Prus-Szczepanik condition
(SpringerOpen, 2014-12)
In 2005 Prus and Sczcepanik introduced a large class of Banach spaces with the fixed point property for nonexpansive mappings. We say that this class satisfies the PSz condition. Checking that a given Banach space belongs ...
Artículo
On a modification of the Jacobi linear functional asymptotic properties and zeros of the corresponding orthogonal polynomials
(Springer, 2002-04)
The paper deals with orthogonal polynomials in the case where the orthogonality condition is related to semiclassical functionals. The polynomials that we discuss are a generalization of Jacobi polynomials and Jacobi-type ...
Artículo
Artículo
Common hypercyclic functions for multiples of convolution and non-convolution operators
(American Mathematical Society, 2009-11)
We prove the existence of a residual set of entire functions, all of whose members are hypercyclic for every nonzero scalar multiple of T, where T is the differential operator associated to an entire function of order less ...
Artículo
«Empaquetando» a los estudiantes en las aulas
(Universidad de Almería, 2021-04-29)
La situación sanitaria que nos ha tocado vivir ha modificado radicalmente nuestra vida diaria, esencialmente en nuestra forma de relacionarnos. Extremar la higiene y mantener la «distancia social» son dos de las medidas ...