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Ein Kriterium für die Approximierbarkeit von Funktionen aus Sobolewschen Räumen durch glatte Funktionen

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Publication:1147949
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DOI10.1007/BF01168712zbMath0451.46023OpenAlexW2009988381MaRDI QIDQ1147949

Hans-Jürgen Böttger

Publication date: 1981

Published in: Manuscripta Mathematica (Search for Journal in Brave)

Full work available at URL: https://eudml.org/doc/154766


zbMATH Keywords

Sobolev spaceSobolev normHardy-Littlewood maximal functionsCk(En)-smooth functionsextension theorem of Whitney


Mathematics Subject Classification ID

Sobolev spaces and other spaces of ``smooth functions, embedding theorems, trace theorems (46E35) Approximation by other special function classes (41A30)





Cites Work

  • Analytic Extensions of Differentiable Functions Defined in Closed Sets
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