Roberta Musina, Alexander I. Nazarov
Published 2017-01-16Version 1
We study the Nemytskii operators $u\mapsto |u|$ and $u\mapsto u^{\pm}$ in fractional Sobolev spaces $H^s(\mathbb R^n)$, $s>1$.
The distributional hyper-Jacobian determinants in fractional Sobolev spaces
Metric characterization of the sum of fractional Sobolev spaces
Coarea formulae and chain rules for the Jacobian determinant in fractional Sobolev spaces
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