List of Articles hyperstability Open Access Article Abstract Page Full-Text 1 - Stability and hyperstability of orthogonally ring $*$-$n$-derivations and orthogonally ring $*$-$n$-homomorphisms on $C^*$-algebras R. Gholami Gh. Askari M. Eshaghi Gordji Open Access Article Abstract Page Full-Text 2 - A fixed point method for proving the stability of ring $(\alpha, \beta, \gamma)$-derivations in $2$-Banach algebras M. Eshaghi Gordji S. Abbaszadeh Open Access Article Abstract Page Full-Text 3 - 2-Banach stability results for the radical cubic functional equation related to quadratic mapping R. E. Ghali S. Kabbaj Open Access Article Abstract Page Full-Text 4 - A new type of Hyers-Ulam-Rassias stability for Drygas functional equation M. Sirouni M. ‎Almahalebi S. ‎Kabbaj Open Access Article Abstract Page Full-Text 5 - On a new type of stability of a radical cubic functional equation related to Jensen mapping S. A. A. AL-Ali Y. Elkettani Open Access Article Abstract Page Full-Text 6 - Generalized hyperstability of the cubic functional equation in ultrametric spaces Y. ‎Aribou H. Dimou S. Kabbaj