文摘
In this paper, we first introduce the notions of \((n,\beta)\) -normed space and non-Archimedean \((n,\beta)\) -normed space, then we study the Hyers-Ulam stability of the Cauchy functional equation and the Jensen functional equation in non-Archimedean \((n,\beta)\) -normed spaces and that of the pexiderized Cauchy functional equation in \((n,\beta)\) -normed spaces.