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Articles 63 registres trobats  inicianterior54 - 63  anar al registre: La cerca s'ha fet en 0.00 segons. 
54.
8 p, 112.5 KB A Carleson type condition for interpolating sequences in the Hardy spaces of the ball of Cn / Amar, Eric (Université Bordeaux I. UFR Mathématique et Informatique)
In this work we prove that if S is a dual bounded sequence of points in the unit ball B of Cn for the Hardy space Hp(B), then S is Hs(B) interpolating with the linear extension property for any s ∈ [1, p[.
2009 - 10.5565/PUBLMAT_53209_09
Publicacions matemàtiques, V. 53 n. 2 (2009) p. 481-488  
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55.
22 p, 210.5 KB Similarity of operators and geometry of eigenvector bundles / Kwon, H.-K. (Brown University (Estats Units d'Amèrica). Department of Mathematics) ; Treil, S. (Brown University (Estats Units d'Amèrica). Department of Mathematics)
We characterize the contractions that are similar to the backward shift in the Hardy space H². This characterization is given in terms of the geometry of the eigenvector bundles of the operators.
2009 - 10.5565/PUBLMAT_53209_06
Publicacions matemàtiques, V. 53 n. 2 (2009) p. 417-438  
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56.
34 p, 317.6 KB Beltrami equations with coefficient in the Sobolev space W1,p / Clop, Albert (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Faraco, D. (Universidad Autónoma de Madrid. Departamento de Matemáticas) ; Mateu Bennassar, Joan (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Orobitg i Huguet, Joan (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Zhong, X. (University of Jyväskylä. Department of Mathematics and Statistics)
We study the removable singularities for solutions to the Beltrami equation ∂f = µ ∂f, where µ is a bounded function, kµk∞ ≤ K−1 K+1 < 1, and such that µ ∈ W1,p for some p ≤ 2. Our results are based on an extended version of the well known Weyl's lemma, asserting that distributional solutions are actually true solutions. [...]
2009 - 10.5565/PUBLMAT_53109_09
Publicacions matemàtiques, V. 53 n. 1 (2009) p. 197-230  
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57.
26 p, 251.5 KB Uniqueness theorems for Cauchy integrals / Melnikov, Mark (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Poltoratski, Alexei (Texas A&M University. Department of Mathematics) ; Volberg, Alexander (Michigan State University. Department of Mathematics)
If µ is a finite complex measure in the complex plane C we denote by Cµ its Cauchy integral defined in the sense of principal value. The measure µ is called reflectionless if it is continuous (has no atoms) and Cµ = 0 at µ-almost every point. [...]
2008 - 10.5565/PUBLMAT_52208_03
Publicacions matemàtiques, V. 52 n. 2 (2008) p. 289-314  
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58.
48 p, 363.3 KB Dimension of measures: the probabilistic approach / Heurteaux, Yanick (Université Blaise Pascal (França). Laboratoire de Mathématiques)
Various tools can be used to calculate or estimate the dimension of measures. Using a probabilistic interpretation, we propose very simple proofs for the main inequalities related to this notion. We also discuss the case of quasi-Bernoulli measures and point out the deep link existing between the calculation of the dimension of auxiliary measures and the multifractal analysis. [...]
2007 - 10.5565/PUBLMAT_51207_01
Publicacions matemàtiques, V. 51 n. 2 (2007) p. 243-290  
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59.
19 p, 172.0 KB Estimates of Green functions and harmonic measures for elliptic operators with singular drift terms / Ifra, Abdoul ; Riahi, Lotfi
In this paper, we prove the existence and uniqueness of the continuous Green function G for the elliptic operator L = div(A(x)∇x)+B(x)·∇x with singular drift term B on a C1,1 bounded domain D in Rn, n ≥ 3, and its comparability to the Green function G0 of L0 = div(A(x)∇x). [...]
2005 - 10.5565/PUBLMAT_49105_07
Publicacions matemàtiques, V. 49 N. 1 (2005) , p. 159-177  
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60.
12 p, 151.5 KB Local monotonicity of measures supported by graphs of convex functions / Cerny, Robert (Charles University (Praga, República Txeca). Department of Mathematical Analysis)
Let f ∈ C2 (R) satisfy f(0) = f 0 (0) = 0 and f 00(0) > 0. Then the 1-dimensional Hausdorff measure restricted to the graph of f is locally monotone near the origin in the sense that there exists σ > 0 such that the function r 7→ µf B(z,r) r is nondecreasing on (0, σ) for every centre z ∈ B(σ). [...]
2004 - 10.5565/PUBLMAT_48204_04
Publicacions matemàtiques, V. 48 N. 2 (2004) , p. 369-380  
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61.
34 p, 225.9 KB Multilinear commutators for fractional integrals in non-homogeneous spaces / Guoen, Hu ; Yan, Meng ; Dachung, Yang
Under the assumption that µ is a non-doubling measure on Rd, the authors obtain the (Lp, Lq)-boundedness and the weak type endpoint estimate for the multilinear commutators generated by fractional integrals with RBMO(µ) functions of Tolsa or with Oscexp Lr (µ) functions for r ≥ 1, where Oscexp Lr (µ) is a space of Orlicz type satisfying that Oscexp Lr (µ) = RBMO(µ) if r = 1 and Oscexp Lr (µ) ⊂ RBMO(µ) if r >.
2004 - 10.5565/PUBLMAT_48204_03
Publicacions matemàtiques, V. 48 N. 2 (2004) , p. 335-367  
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62.
46 p, 303.2 KB Hausdorff dimension, projections, and the Fourier transform / Mattila, Pertti
This is a survey on transformation of fractal type sets and measures under orthogonal projections and more general mappings.
2004 - 10.5565/PUBLMAT_48104_01
Publicacions matemàtiques, V. 48 N. 1 (2004) , p. 3-48  
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63.
21 p, 1.1 MB Measure concentration in optimization / Barvinok, Alexander
We discuss some consequences of the measure concentration phenomenon for optimization and computational problems. Topics include average case analysis in optimization, efficient approximate counting, computation of mixed discriminants and permanents, and semidefinite relaxation in quadratic programming. [...]
1997
Mathematical Programming, vol. 79 n. 1-3 (1997) p. 33-53  
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Articles : 63 registres trobats   inicianterior54 - 63  anar al registre:
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