Bochner's subordination and fractional caloric smoothing in Besov and Triebel–Lizorkin spaces

We use Bochner's subordination technique to obtain caloric smoothing estimates in Besov‐ and Triebel–Lizorkin spaces. Our new estimates extend known smoothing results for the Gauß–Weierstraß, Cauchy–Poisson and higher‐order generalized Gauß–Weierstraß semigroups. Extensions to other function sp...

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Veröffentlicht in:Mathematische Nachrichten 2022-02, Vol.295 (2), p.363-376
Hauptverfasser: Knopova, Victoriya, Schilling, René L.
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description We use Bochner's subordination technique to obtain caloric smoothing estimates in Besov‐ and Triebel–Lizorkin spaces. Our new estimates extend known smoothing results for the Gauß–Weierstraß, Cauchy–Poisson and higher‐order generalized Gauß–Weierstraß semigroups. Extensions to other function spaces (homogeneous, hybrid) and more general semigroups are sketched.
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subjects caloric smoothing
Estimates
Function space
function spaces
Gauß–Weierstraß semigroup
Semigroups
Smoothing
subordination
title Bochner's subordination and fractional caloric smoothing in Besov and Triebel–Lizorkin spaces
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