We develop a higher regularity theory for general quasilinear elliptic equations and systems in divergence form with random coefficients. The main result is a large-scale L∞-type estimate for the gradient of a solution. The estimate is proved with optimal stochastic integrability under a one-parameter family of mixing assumptions, allowing for very weak mixing with non-integrable correlations to very strong mixing (for example finite range of dependence). We also prove a quenched L2 estimate for the error in homogenization of Dirichlet problems. The approach is based on subadditive arguments which rely on a variational formulation of general quasilinear divergence-form equations.
|Original language||English (US)|
|Number of pages||94|
|Journal||Archive for Rational Mechanics and Analysis|
|State||Published - Jan 1 2016|
ASJC Scopus subject areas
- Mathematics (miscellaneous)
- Mechanical Engineering