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A Pexider difference associated to a Pexider quartic functional equation in topological vector spaces. (English) Zbl 1280.39018

The authors prove an interesting result concerning the Hyers-Ulam stability of a Pexiderized quartic functional equation in complete topological vector spaces.

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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