Existence of entropy solutions for some anisotropic quasilinear elliptic unilateral problems

Afrika Matematika - Tập 28 - Trang 357-378 - 2016
Mohammed Al-Hawmi1, Elhoussine Azroul1, Hassane Hjiaj2, Abdelfattah Touzani1
1Laboratoire d’Analyse Mathématique et Applications (LAMA), Faculté des Sciences Dhar El Mahraz, Université Sidi Mohamed Ben Abdellah, Atlas Fès, Morocco
2Département de Mathématiques, Faculté des Sciences de Tétouan, Université Abdelmalek Essaadi, Tétouan, Morocco

Tóm tắt

In this work, we consider the following quasilinear elliptic unilateral equations of the type $$\begin{aligned} -\sum _{i=1}^{N}\frac{\partial }{\partial x_{i}}a_{i}(x,u,\nabla u) = \mu - \text{ div } \phi (u)\quad \text{ in } \Omega . \end{aligned}$$ In the anisotropic Sobolev space, we prove the existence of entropy solutions for our unilateral problem, where $$\mu = f-\text{ div } F$$ belongs to $$L^{1}(\Omega ) + W^{-1,\mathbf {p'}}(\Omega )$$ and $$\phi (\cdot ) \in C^{0}(\mathbb {R},\mathbb {R}^{N}).$$

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