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arxiv: 0904.0909 · v1 · submitted 2009-04-06 · 🧮 math.FA

On Sobolev extension domains in R^n

classification 🧮 math.FA
keywords domainsextensionsobolevomegacertaincharacterizeclassconnected
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We describe a class of Sobolev $W^k_p$-extension domains $\Omega\subset R^n$ determined by a certain inner subhyperbolic metric in $\Omega$. This enables us to characterize finitely connected Sobolev $W^1_p$-extension domains in $R^2$ for each $p>2$.

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