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A Functional equation related to inner product spaces in non-archimedean normed spacesKeywords: non-Archimedean spaces , additive and quadratic functional equation , Hyers-Ulam stability Abstract: In this paper, we prove the Hyers-Ulam stability of a functional equation related to inner product spaces in non-Archimedean normed spaces. 2010 Mathematics Subject Classification: Primary 46S10; 39B52; 47S10; 26E30; 12J25.
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