STABILITY OF THE n–DIMENSIONAL MIXED–TYPE ADDITIVE AND QUADRATIC FUNCTIONAL EQUATION IN NON–ARCHIMEDEAN NORMED SPACES, II
نویسندگان
چکیده
In this paper, we prove the stability of the functional equation ∑ 1 i, j n,i = j ( f (xi + x j)+ f (xi − x j) ) = (n−1) n ∑ i=1 ( 3 f (xi)+ f (−xi) ) in non-Archimedean normed spaces. Mathematics subject classification (2010): 39B82, 46S10, 39B52.
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