Listar Análisis Matemático por agencia financiadora "Ministerio de Educación y Ciencia (MEC). España"
Mostrando ítems 1-20 de 23
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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 maximum principle for the Muskat problem for fluids with different densities
(Springer, 2009-03)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 Lorentz-Shimogaki theorem
(Indiana University, 2007)Given any quasi-Banach function space X over Rn it is defined an index αX that coincides with the upper Boyd index αX when ...
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A1 bounds for Calderón-Zygmund operators related to a problem of Muckenhoupt and Wheeden
(International Press, 2009)We obtain an Lp(w) bound for Calderón-Zygmund operators T when w ∈ A1. This bound is sharp both with respect to ∥w∥A1 and with respect to p. As a result, we get a new L1,∞(w) estimate for T related to a problem of Muckenhoupt and Wheeden.
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Analytical behavior of two-dimensional incompressible flow in porous media
(AIP Publishing (American Institute of Physics), 2007-06)In this paper we study the analytic structure of a two-dimensional mass balance equation of an incompressible fluid in a ...
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Approximation of Lipschitz functions by Δ-convex functions in banach spaces
(Springer, 1998-12)In this paper we give some results about the approximation of a Lipschitz function on a Banach space by means of ∆-convex ...
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Asymptotics of Keiper-Li coefficients
(Adam Mickiewicz University, Faculty of Mathematics and Computer Science, 2011)We show that the Riemann Hypothesis is equivalent to the assertion (ym)∈ℓ2 where ymym is defined by λm=1/2(logm+γ−log(2π)−1)+ym, ...
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Existence for the α-patch model and the QG sharp front in Sobolev spaces
(Elsevier, 2008-04-01)We consider a family of contour dynamics equations depending on a parameter α with 0<α⩽1. The vortex patch problem of the ...
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Heisenberg uniqueness pairs and the Klein-Gordon equation
(Princeton University, 2011)A Heisenberg uniqueness pair (HUP) is a pair (Γ, Λ), where Γ is a curve in the plane and Λ is a set in the plane, with the ...
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Incompressible flow in porous media with fractional diffusion
(IOP Publishing, 2009-08)In this paper we study the heat transfer with a general fractional diffusion term of an incompressible fluid in a porous ...
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Interface evolution: the Hele-Shaw and Muskat problems
(Princeton University, 2011)We study the dynamics of the interface between two incompressible 2-D flows where the evolution equation is obtained from ...
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Invariant means and thin sets in harmonic analysis with applications to prime numbers
(Wiley, 2009-08)We first prove a localization principle characterising Lust-Piquard sets. We obtain that the union of two Lust-Piquard ...
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Limit relations between q-Krall type orthogonal polynomials
(Elsevier, 2006)In this paper, we consider a natural extension of several results related to Krall-type polynomials introducing a modification ...
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Modelos matemáticos en biología: un viaje de ida y vuelta
(Sociedad Española de Matemática Aplicada, 2006)El objetivo de este trabajo es mostrar la provechosa interacción entre la Biología y la Matemática. Para ello veremos ...
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Nevanlinna counting function and Carleson function of analytic maps
(Springer, 2011-10)We show that the maximal Nevanlinna counting function and the Carleson function of analytic self-maps of the unit disk are equivalent, up to constants.
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New maximal functions and multiple weights for the multilinear Calderón-Zygmund theory
(Elsevier, 2009-03-01)A multi(sub)linear maximal operator that acts on the product of m Lebesgue spaces and is smaller that the m-fold product ...
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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 ...
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Sharp two-weight inequalities for singular integrals, with applications to the Hilbert transform and the Sarason conjecture
(Elsevier, 2007-12-20)We prove two-weight norm inequalities for Calderón-Zygmund singular integrals that are sharp for the Hilbert transform ...
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Some revisited results about composition operators on Hardy spaces
(European Mathematical Society, 2012)We generalize, on one hand, some results known for composition operators on Hardy spaces to the case of Hardy-Orlicz spaces ...