Now showing items 31-40 of 554
Invariant means and thin sets in harmonic analysis with applications to prime numbers [Article]
We first prove a localization principle characterising Lust-Piquard sets. We obtain that the union of two Lust-Piquard sets is a Lust-Piquard set, provided that one of these two sets is closed for the Bohr topology. We ...
Approximation numbers of weighted composition operators [Article]
We study the approximation numbers of weighted composition operators f 7→ w · (f ◦ ϕ) on the Hardy space H2 on the unit disc. For general classes of such operators, upper and lower bounds on their approximation numbers ...
Genericity of the fixed point property under renorming. [PhD Thesis]
Una aplicaci on T de nida de un espacio m etrico M en M se dice no expansiva si d(Tx; Ty) d(x; y) para todo x; y 2 M. Diremos que un espacio de Banach X tiene la Propiedad D ebil del Punto Fijo (w-FPP) si para toda aplicaci ...
Incompressible flow in porous media with fractional diffusion [Article]
(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 medium governed by Darcy’s law. We show formation of singularities with infinite energy and for finite ...