Analysis of continuity for the Nemytskii operator in Orlicz-Sobolev spaces reveals implications for classical results.
The continuity of the Nemytskii operator between Orlicz-Sobolev spaces is investigated. Natural Orlicz-Sobolev versions of classical results for standard Sobolev are established. The results presented not only extend the latter, but also improve them in borderline situations. Anisotropic Orlicz-Sobolev spaces are included in our analysis. The results offered for this class of spaces are new even for customary anisotropic Sobolev spaces.
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Borowski et al. (2025) studied this question.
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