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Homogenization estimates for high order elliptic operators (2107.00089v1)

Published 30 Jun 2021 in math.AP

Abstract: In the whole space $Rd$, $d\ge 2$, we study homogenization of a divergence form elliptic operator $A_\varepsilon$ of order $2m\ge 4$ with measurable $\varepsilon$-periodic coefficients, where $\varepsilon$ is a small parameter. For the resolvent $(A_\varepsilon+1){-1}$, we construct an approximation with the remainder term of order $\varepsilon2$ in the operator $(L2{\to}Hm)$-norm, using the resolvent of the homogenized operator, solutions of several auxiliary periodic problems on the unit cube, and smoothing operators. The homogenized operator here differs from the one commonly employed in homogenization.

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