Dipòsit Digital de Documents de la UAB 18 registres trobats  anterior11 - 18  anar al registre: La cerca s'ha fet en 0.01 segons. 
11.
30 p, 250.6 KB Asymptotic L1-decay of solutions of the porous medium equation to self-similarity / Carrillo de la Plata, José Antonio (University of Texas at Austin. Department of Mathematics) ; Toscani., G. (University of Pavia. Department of Mathematics)
We consider the flow of gas in an N -dimensional porous medium with initial density v0 (x) ≥ 0. The density v(x, t) then satisfies the nonlinear degenerate parabolic equation vt = ∆v m where m > 1 is a physical constant. [...]
2000 - 10.1512/iumj.2000.49.1756
Indiana University mathematics journal, Vol. 49, No. 1 (2000) , p. 113-142  
12.
23 p, 217.4 KB Conductor Sobolev-type estimates and isocapacitary inequalities / Cerdà Martín, Joan Lluís (Universitat de Barcelona. Departament de Matemàtica Aplicada i Anàlisi) ; Martín i Pedret, Joaquim (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Silvestre, Pilar (Aalto University. Department of Mathematics and Systems Analysis)
In this paper we present an integral inequality connecting a function space (quasi-)norm of the gradient of a function to an integral of the corresponding capacity of the conductor between two level surfaces of the function, which extends the estimates obtained by V. [...]
2012 - 10.1512/iumj.2012.61.4709
Indiana University mathematics journal, Vol. 61, No. 5 (2012) , p. 1925-1947  
13.
27 p, 259.5 KB On the analytic capacity gamma ɣ+ / Tolsa Domènech, Xavier (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
The analytic capacity ‚ɣ+ is a version of the usual analytic capacity ‚ɣ which is generated by Cauchy potentials of positive measures. Some recent results have shown the importance ‚ɣ+ of for the understanding of the metric-geometric properties of ‚ɣ. [...]
2002 - 10.1512/iumj.2002.51.2202
Indiana University mathematics journal, Vol. 51, No. 2 (2002) , p. 317-343  
14.
16 p, 228.8 KB Non existence of principal values of signed Riesz transforms of non integer dimension / Ruiz de Villa Robert, Aleix (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Tolsa Domènech, Xavier (Institució Catalana de Recerca i Estudis Avançats)
2010 - 10.1512/iumj.2010.59.3884
Indiana University mathematics journal, Vol. 59, No. 1 (2010) , p. 115-130  
15.
31 p, 287.8 KB Finite curvature of arc length measure implies rectifiability : a new proof / Tolsa Domènech, Xavier (Institució Catalana de Recerca i Estudis Avançats)
If E C C is a set with finite length and finite curvature, then E is rectifiable. This fact, proved by David and Léger in 1999, is one of the basic ingredients for the proof of Vitushkin's conjecture. [...]
2005 - 10.1512/iumj.2005.54.2746
Indiana University mathematics journal, Vol. 54, No. 4 (2005) , p. 1075-1105  
16.
34 p, 311.9 KB Lp-estimates for Riesz transforms on forms in the Poincaré space / Bruna, Joaquim (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
Using hyperbolic form convolution with doubly isometry-invariant kernels, the explicit expression of the inverse of the de Rham laplacian ∆ acting on m-forms in the Poincaré space Hn is found. Also, by means of some estimates for hyperbolic singular integrals, Lp-estimates for the Riesz transforms ∆i∆Ñ−1, i ≤ 2, in a range of p depending on m, n are obtained. [...]
2005 - 10.1512/iumj.2005.54.2501
Indiana University mathematics journal, Vol. 54, No. 1 (2005) , p. 153-187  
17.
59 p, 500.3 KB Mittag-Leffler conditions on modules / Angeleri Hügel, Lidia (Universit'a degli Studi dell'Insubria. Dipartimento di Informatica e Comunicazione) ; Herbera i Espinal, Dolors (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
We study Mittag-Leffler conditions on modules providing relative versions of classical results by Raynaud and Gruson. We then apply our investigations to several contexts. First of all, we give a new argument for solving the Baer splitting problem. [...]
2008 - 10.1512/iumj.2008.57.3325
Indiana University mathematics journal, Vol. 57, No. 5 (2008) , p. 2459-2517  
18.
36 p, 330.8 KB Distributional inequalities for non harmonic functions / González, María J. (Universidad de Cádiz. Departamento de Matemáticas) ; Koskela, P. (University of Jyväskylä. Department of Mathematics) ; González Llorente, José (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Nicolau, Artur (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
The relationship between the non-tangential maximal function and convenient versions of the area function of a general (non harmonic) function in a upper-half space are studied.
2003 - 10.1512/iumj.2003.52.2140
Indiana University mathematics journal, Vol. 52, No. 1 (2003) , p. 191-226  

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