Hyperstability of some functional equations in modular spaces
Abstract
In this paper, we investigate some hyperstability results, inspired by the concept of Ulam stability, for the following functional equations: equation (x+y)+(x-y)=2(x)+2(y) equation equation (ax+by) = A(x)+B(y)+C equation equationeqnd f(Σi=1mxi)+Σ1≤ i<j≤ mf(xi-xj)=mΣi=1mf(xi) equation in modular spaces.
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