In this paper, we first present the new concept of $2$-normed algebra.We investigate the structure of this algebra and give some examples.Then we apply a fixed point theorem to prove the stability and hyperstability of $(\alpha, \beta, \gamma)$-derivations in $2$-Banach More
In this paper, we first present the new concept of $2$-normed algebra.We investigate the structure of this algebra and give some examples.Then we apply a fixed point theorem to prove the stability and hyperstability of $(\alpha, \beta, \gamma)$-derivations in $2$-Banach algebras.
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