Singular integral operators with operator-valued kernels, and extrapolation of maximal regularity into rearrangement invariant Banach function spaces
Résumé
We prove two extrapolation results for singular integral operators with operator-valued kernels and we apply these results in order to obtain the following extrapolation of L p-maximal regularity: if an autonomous Cauchy problem on a Banach space has L p-maximal regularity for some p ∈ (1, ∞), then it has E w-maximal regularity for every rearrangement-invariant Banach function space E with Boyd indices 1 < p E ≤ q E < ∞ and every Muckenhoupt weight w ∈ A p E. We prove a similar result for non-autonomous Cauchy problems on the line.
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