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Resultados globales: 7 registros encontrados en 0.02 segundos.
Artículos, Encontrados 7 registros
Artículos Encontrados 7 registros  
1.
13 p, 312.4 KB Commutators for fourier multipliers on Besov spaces / Cerdà Martín, Joan Lluís (Universitat de Barcelona. Departament de Matemàtica Aplicada i Anàlisi) ; Martín i Pedret, Joaquim (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
If T is any bounded linear operator on Besov spaces Bpσj,qj(Rn)(j=0,1, and 0<σ1<σ<σ0), it is proved that the commutator [T,Tμ]=TTμ -TμT is bounded on Bpσ,q (Rn), if Tμ is a Fourier multiplier such that μ is any (possibly unbounded) symbol with uniformly bounded variation on dyadic coronas.
2004 - 10.1016/j.jat.2004.03.007
Journal of approximation theory, Vol. 129, Issue 2 (August 2004) , p. 119-128  
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2.
27 p, 431.2 KB Symmetrization inequalities in the fractional case and Besov embeddings / Martín i Pedret, Joaquim (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
We prove new extended forms of the Pólya-Szegö symmetrization principle in the fractional case. As a consequence we determine new results for rearrangement invariant hulls of generalized Besov spaces.
2008 - 10.1016/j.jmaa.2008.02.028
Journal of mathematical analysis and applications, Vol. 344, Issue 1 (August 2008) , p. 99-123  
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3.
22 p, 405.8 KB Higher-order symmetrization inequalities and applications / Martín i Pedret, Joaquim (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Milman, Mario (Florida Atlantic University. Department of Mathematics)
We prove new extended forms of the Pólya-Szegö symmetrization principle. As a consequence new sharp embedding theorems for generalized Sobolev and Besov spaces are proved.
2007 - 10.1016/j.jmaa.2006.07.033
Journal of mathematical analysis and applications, Vol. 330, Issue 1 (June 2007) , p. 91-113  
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4.
14 p, 498.0 KB Symmetrization inequalities and Sobolev emmbedings / Martín i Pedret, Joaquim (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Milman, Mario (Florida Atlantic University. Department of Mathematics)
We prove new extended forms of the Pólya-Szegö symmetrization principle. As a consequence new sharp embedding theorems for generalized Besov spaces are proved, including a sharpening of the limiting cases of the classical Sobolev embedding theorem. [...]
2006
Proceedings of the American Mathematical Society, Vol. 134, Issue 8 (February 2006) , p. 2335-2347  
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5.
32 p, 606.3 KB A Sobolev type embedding theorem for Besov spaces defined on doubling metric spaces / Martín i Pedret, Joaquim (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Ortiz Vargas, Walter Andrés (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
We obtain a Sobolev type embedding result for Besov spaces defined on a doubling measure metric space.
2019 - 10.1016/j.jmaa.2019.07.032
Journal of mathematical analysis and applications, Vol. 479, Issue 2 (November 2019) , p. 2302-2337  
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6.
17 p, 796.3 KB Besov regularity for solutions of p-harmonic equations / Clop, Albert (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Giova, Raffaella (Università degli Studi di Napoli "Parthenope". Dipartimento di Studi Economici e Giuridici) ; Passarelli Di Napoli, Antonia (Università degli Studi di Napoli "Federico II". Dipartimento di Matematica e Applicazioni "R. Caccioppoli")
We establish the higher fractional differentiability of the solutions to nonlinear elliptic equations in divergence form, i. e. , divA(x, Du) = div F, when A is a p-harmonic type operator, and under the assumption that x → A(x, ζ) belongs to the critical Besov-Lipschitz space B We prove that some fractional differentiability assumptions on F transfer to Du with no losses in the natural exponent of integrability. [...]
2019 - 10.1515/anona-2017-0030
Advances in Nonlinear Analysis, Vol. 8, Issue 1 (January 2019) , p. 762-778  
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7.
27 p, 398.3 KB A trace theorem for Besov functions in spaces of homogeneous type / Marcos, Miguel Andrés (Consejo Nacional de Investigaciones Científicas y Técnicas - CONICET (Argentina))
The aim of this paper is to prove a trace theorem for Besov functions in the metric setting, generalizing a known result from A. Jonsson and H. Wallin in the Euclidean case. We show that the trace of a Besov space defined in a 'big set' X is another Besov space defined in the 'small set' F ⊂ X. [...]
2018 - 10.5565/PUBLMAT6211810
Publicacions matemàtiques, Vol. 62 Núm. 1 (2018) , p. 185-211 (Articles)  
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