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Sulla differenziabilita secondo Gateaux di inviluppi superiori di funzioni negli spazi di Banach. (On the differentiability in the sense of Gateaux of upper envelopes of functions on Banach spaces.). (Italian) Zbl 0222.46027


MSC:

46G05 Derivatives of functions in infinite-dimensional spaces
58C20 Differentiation theory (Gateaux, Fréchet, etc.) on manifolds
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