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March  2015, 14(2): 597-607. doi: 10.3934/cpaa.2015.14.597

$W$-Sobolev spaces: Higher order and regularity

Alexandre B. Simas 1, and  Fábio J. Valentim 2,

1. 

Departamento de Matemática, Universidade Federal da Paraíba, Cidade Universitária - Campus I, 58051-970, João Pessoa - PB, Brazil
2. 

Departamento de Matemática, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, 29075-910, Vitória - ES, Brazil

Received  June 2014 Revised  September 2014 Published  December 2014

Fix a function $W(x_1,\ldots,x_d) = \sum_{k=1}^d W_k(x_k)$ where each $W_k: R \to R$ is a right continuous with left limits and strictly increasing function, and consider the $W$-laplacian given by $\Delta_W = \sum_{i=1}^d \partial_{x_i}\partial_{W_i}$, which is a generalization of the laplacian operator. In this work we introduce the $W$-Sobolev spaces of higher order, thus extending the notion of $W$-Sobolev spaces introduced in Simas and Valentim (2011) [7]. We then provide a characterization of these spaces in terms of a suitable Fourier series, and conclude the paper with some results on elliptic regularity of the problem $\lambda u - \Delta_Wu = f,$ for $\lambda\geq 0$.
Keywords: second-order elliptic equations, special Fourier series, compact embedding., $W$-Sobolev spaces, regularity.
Mathematics Subject Classification: Primary: 35J15; Secondary: 46E3.
Citation: Alexandre B. Simas, Fábio J. Valentim. $W$-Sobolev spaces: Higher order and regularity. Communications on Pure & Applied Analysis, 2015, 14 (2) : 597-607. doi: 10.3934/cpaa.2015.14.597
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[1]

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A. B. Simas and F. J. Valentim, Homogenization of second-order generalized elliptic operators,, submitted for publication., ().   Google Scholar

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show all references

References:
[1]

Probability Theory and Related Fields, 144 (2009), 633-667. doi: 10.1007/s00440-008-0157-7.  Google Scholar

[2]

Stochastic Processes and their Applications, 120 (2010), 1535-1562. Google Scholar

[3]

Archive for Rational Mechanics and Analysis, 195 (2009), 409-439. doi: 10.1007/s00205-008-0206-5.  Google Scholar

[4]

Annals of Probability, 39 (2011), 176-223. doi: 10.1214/10-AOP554.  Google Scholar

[5]

Math. Nachr., 152 (1991), 229-245. Google Scholar

[6]

Springer-Verlag, Berlin, 1968.  Google Scholar

[7]

Journal of Mathematical Analysis and Applications, 382 (2011), 214-230. Google Scholar

[8]

A. B. Simas and F. J. Valentim, Homogenization of second-order generalized elliptic operators,, submitted for publication., ().   Google Scholar

[9]

Ann. Inst. H. Poincaré Probab. Statist, 48 (2012), 188-211. Google Scholar

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