Browsing Artículos (Análisis Matemático) by Title
Now showing items 120 of 453

Article
2º Congreso de Jóvenes Investigadores
(Real Sociedad Matematica Española, 2013) 
Article
A Birkhoff theorem for Riemann surfaces
(Rocky Mountain Mathematics Consortium, 1998)A classical theorem of Birkhoff asserts that there exists an entire function f such that the sequence of function {/(z + ...

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A Bp condition for the strong maximal function
(American Mathematical Society, 201411)A strong version of the Orlicz maximal operator is introduced and a natural Bp condition for the rectangle case is defined ...

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A characterization of the classical orthogonal discrete and qpolynomials
(Elsevier, 20070401)In this paper we present a new characterization for the classical discrete and qclassical (discrete) polynomials (in the Hahn's sense).

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A continuation method for weakly contractive mappings under the interior condition
(Hindawi, 2009)Recently, Frigon proved that, for weakly contractive maps, the property of having a fixed point is invariant by a certain ...

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A continuation method for weakly Kannan maps
(SpringerOpen, 2010)The first continuation method for contractive maps in the setting of a metric space was given by Granas. Later, Frigon ...

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A criterion of weak compactness for operators on subspaces of Orlicz spaces
(Hindawi, 2008)We give a criterion of weak compactness for the operators on the MorseTransue space MΨ , the subspace of the Orlicz space LΨ generated by L∞.

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A dynamical characterization of subArakelian subsets
(Elsevier, 20130915)We are going to characterize those sets which can be covered by an Arakelian set in terms of dynamical properties of entire ...

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A fixed point theorem for weakly Zamfirescu mappings
(Elsevier, 20110301)In [13] T. Zamfirescu, Fixed point theorems in metric spaces, Arch. Math. 23 (1972), 292–298. Zamfirescu gave a fixed ...

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A Fredholm mapping of index zero
(Korean Mathematical Society, 2008)Sufficient conditions are given to assert that between any two Banach spaces over K Fredholm mappings share exactly N values in a specific open ball. The proof of the result is constructive and is based upon continuation methods.

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A generalization of the classical Laguerre polynomials
(Springer, 1995)We consider a modi cation of the gamma distribution by adding a discrete measure supported in the point x = 0. For large ...

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A geometrical coefficient implying the fixed point property and stability results
(University of Houston, 1996)In this paper we define a new geometric constant M(X) in Banach spaces such that X has the fixed point property for ...

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A local spectral condition for strong compactness with some applications to bilateral weighted shifts
(American Mathematical Society, 201401)An algebra of bounded linear operators on a Banach space is said to be strongly compact if its unit ball is precompact ...

Article
A lot of “counterexamples” to Liouville's theorem
(Elsevier, 19960801)We prove in this paper that, given α ∈ (0, 1/2), there exists a linear manifold M of entire functions satisfying that M ...

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A lower bound for the equilateral number of normed spaces
(American Mathematical Society, 2008)We show that if the BanachMazur distance between an ndimensional normed space X and ℓ n∞ is at most 3/2, then there exist ...

Article
A maximum principle for the Muskat problem for fluids with different densities
(Springer, 200903)We consider the fluid interface problem given by two incompressible fluids with different densities evolving by Darcy’s ...

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A new characterization of the Muckenhoupt Ap weights through an extension of the LorentzShimogaki theorem
(Indiana University, 2007)Given any quasiBanach function space X over Rn it is defined an index αX that coincides with the upper Boyd index αX when ...

Article
A new quantitative two weight theorem for the HardyLittlewood maximal operator
(American Mathematical Society, 201502)A quantitative two weight theorem for the HardyLittlewood maximal operator is proved improving the known ones. As a ...

Article
A note on an ergodic theorem in weakly uniformly convex geodesic spaces
(Springer, 201511)Karlsson and Margulis [A. Karlsson, G. Margulis, A multiplicative ergodic theorem and nonpositively curved spaces. Commun. ...

Article
A note on interface dynamics for convection in porous media
(Elsevier, 20080715)We study the fluid interface problem through porous media given by two incompressible 2D fluids of different densities. ...