Nearly Radical Quadratic Functional Equations in p‐2‐Normed Spaces

M. Eshaghi Gordji, H. Khodaei, A. Ebadian and G. H. Kim

Abstract and Applied Analysis, 2012, vol. 2012, issue 1

Abstract: We establish some stability results in 2‐normed spaces for the radical quadratic functional equation f(∑i=1n(xi+yi) 2)+f(∑i=1n(xi-yi) 2)=2∑i=1n(f(xi)+f(yi)) and then use subadditive functions to prove its stability in p‐2‐normed spaces.

Date: 2012
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https://doi.org/10.1155/2012/896032

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Persistent link: https://EconPapers.repec.org/RePEc:wly:jnlaaa:v:2012:y:2012:i:1:n:896032

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