Abstract
We study the problem of averaging Dirichlet problems for nonlinear elliptic second-order equations in domains with fine-grained boundary. We consider a class of equations admitting degeneration with respect to the gradients of solutions. We prove a pointwise estimate for solutions of the model nonlinear boundary-value problem and construct an averaged boundary-value problem under new structural assumptions concerning perforated domains. In particular, it is not assumed that the diameters of cavities are small as compared to the distances between them.
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Skrypnik, I.V. New conditions for averaging of nonlinear dirichlet problems in perforated domains. Ukr Math J 48, 753–774 (1996). https://doi.org/10.1007/BF02384225
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DOI: https://doi.org/10.1007/BF02384225