Blog de la Bibliotecade Matemàtiques i Informàtica

SIMBa: Double-half Session: Convolution in weighted Lorentz spaces | Normability of Lorentz spaces – Duality approach

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Dilluns, 17 de febrer, se celebrarà una nova sessió del Seminari Informal de Matemàtiques de Barcelona (SIMBa).

Speaker: Martin Kepela
Universitat: Karsltad University/Charles University

Data: Dilluns, 20 de gener de 2014
Hora: 18:00, cafè i galetes; 18:30, inici
Lloc: Aula IMUB (al terrat), Facultat de Matemàtiques de la Universitat de Barcelona.

Títol: Convolution in weighted Lorentz spaces
Resum: Considering a convolution operator with a general kernel, I will show a characterization of its boundedness between various Lorentz spaces with general weights. As a by-product, one also gets certain convolution inequalities of Young’s type. The proof technique is based on the classical O’Neil’s estimate for convolution operators and reformulating of the problem by weighted Hardy inequalities.

Speaker: Filip Soudský
Universitat: Charles University (Uniwersytetu Jagiellonskiego)

Títol: Normability of Lorentz spaces – Duality approach
Resum: Classical Lorentz spaces of the type  rst appeared in 1951. They have been intensively studied since then. In this talk we shall consider the question of normability of thesespaces, and give an outline of an alternative proof of the classical Sawyer’s equivalentcondition for normability.

Si voleu rebre informació dels propers seminaris us podeu subscriure a la llista de correu. Si voleu contactar amb els responsables podeu escriure un missatge a seminari(dot)simba(at)ub(dot)edu.

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