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Upper estimates for superposition operators and some applications. (English) Zbl 0489.47017


MSC:

47B38 Linear operators on function spaces (general)
46G05 Derivatives of functions in infinite-dimensional spaces
46E30 Spaces of measurable functions (\(L^p\)-spaces, Orlicz spaces, Köthe function spaces, Lorentz spaces, rearrangement invariant spaces, ideal spaces, etc.)
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