Abstract.
Natural Sobolev-type estimates are proved for weak solutions of inhomogeneous parabolic equations in divergence form in a bounded cylinder Ω*=Ω×(0,T] which is δ-Reifenberg flat in the space direction. The principal coefficients of the operator are assumed to be in BMO space with their BMO semi-norms small enough.
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Byun, SS., Wang, L. Parabolic Equations in Reifenberg Domains. Arch. Rational Mech. Anal. 176, 271–301 (2005). https://doi.org/10.1007/s00205-005-0357-6
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DOI: https://doi.org/10.1007/s00205-005-0357-6