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Artículo
On regularization in superreflexive Banach spaces by infimal convolution formulas
(Polish Academy of Sciences, Institute of Mathematics, 1998)
We present here a new method for approximating functions defined on superreflexive Banach spaces by differentiable functions with α-H¨older derivatives (for some 0 < α ≤ 1). The smooth approximation is given by means of ...
Artículo
Remarks on multivalued nonexpansive mappings
(Soochow University, 1995-01)
Convergence of fixed point sets of multivalued nonexpansive mappings is studied under both the Mosco and Hausdorff senses. A characterization for *- nonexpansive multivalued mappings is given. Also a counterexample is ...
Tesis Doctoral
Nuevos resultados sobre el problema de Navier-Stokes con densidad variable y algunas variantes: Existencia, unicidad, otros resultados teóricos y aproximación numérica
(1992-09-25)
Haremos a continuación una breve descripción de cada uno de los Capítulos de los que consta esta Memoria. Comenzamos el Capítulo 1 con una Sección de resultados técnicos que vamos a utilizar repetidamente. Merece la pena ...
Artículo
On universal entire functions with zero-free derivatives
(Springer, 1997-04)
We prove in this note a generalization of a theorem due to G. Herzog on zero-free universal entire functions. Specifically, it is shown that, if a nonnegative integer q and a nonconstant entire function Φ of subexponential ...
Artículo
q-Deformed Vibron model for diatomic molecules
(American Physical Society, 1994-08)
A deformed version of the vibron model for diatomic molecules is constructed. Both the O(4) and U(3) dynamical symmetries of the model are rewritten, using the concept of complementary subalgebras, in a more convenient ...
Tesis Doctoral
Rango y propiedades de medidas vectoriales. Conjuntos p-Sidon p.s.
(1991)
La presente memoria trata dos campos diferentes del Análisis Matemático. La primera parte se inscribe en el marco del estudio de las Medidas Vectoriales. La segunda trata sobre algunos problemas de Análisis Armónico, en ...
Tesis Doctoral
Tesis Doctoral
Artículo
Convergence in mean of weighted sums of {an,k}-compactly uniformly integrable random elements in Banach spaces
(Hindawi, 1997)
The convergence in mean of a weighted sum ka.k(Xk EXk) of random elements in a separable Banach space is studied under a new hypothesis which relates the random elements with their respective weights in the sum: the {a.. ...
Artículo
Small entire functions with extremely fast growth
(Elsevier, 1997-03-15)
We prove in this note that, given α ∈ (0, 1/2), there exists a linear manifold M of entire functions satisfying that M is dense in the space of all entire functions such that limz→∞ exp(|z|α)f(j)(z) = 0 on any plane strip ...