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Stability of Jensen’s equations in two normed spaces. (English) Zbl 1195.39008

Summary: Some stability questions of the Jensen’s functional inequality in the setting of 2-normed spaces are derived in this article. Few more results are given on approximate isometries.

MSC:

39B82 Stability, separation, extension, and related topics for functional equations
39B52 Functional equations for functions with more general domains and/or ranges
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