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What is left of Hyers-Ulam stability? (English) Zbl 0757.47032
A short review of results [Th. M. Rassias, Proc. Am. Math. Soc. 72, 297-300 (1978; Zbl 0398.47040); J. Math. Anal. Appl. 158, No. 1, 106-113 (1991); and some forthcoming papers] obtained concerning Hyers-Ulam stability for additive mappings in Banach spaces is given and several problems are posed.

MSC:
47J05 Equations involving nonlinear operators (general)
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