Abstract
We prove higher integrability up to the boundary for minimal p-weak upper gradients of parabolic quasiminimizers in metric measure spaces related to the heat equation. We assume the underlying metric measure space to be equipped with a doubling measure and to support a weak Poincaré inequality. The boundary of the domain is assumed to satisfy a regularity condition.
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Masson, M., Parviainen, M. Global higher integrability for parabolic quasiminimizers in metric measure spaces. JAMA 126, 307–339 (2015). https://doi.org/10.1007/s11854-015-0019-z
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DOI: https://doi.org/10.1007/s11854-015-0019-z