On the stability of the quadratic mapping in normed spaces |
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Authors: | St. Czerwik |
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Affiliation: | 1. Institute of Mathematics, Silesian University of Technology, Zwyci?stwa 42, 44-101, Gliwice, Poland
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Abstract: | The problem of the stability of the quadratic functional equation (including ULAM-HYERS and RASSIAS types of stability) in normed spaces is investigated. |
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