issue 2 publication date 2010-06-01

• Isomorphisms in unital $C^*$-algebras
• A new method for the generalized Hyers-Ulam-Rassias stability
• Hyers-Ulam stability of Volterra integral equation
• stability of the quadratic functional equation
• Approximately higher Hilbert $C^*$-module derivations
• Fuzzy approximately additive mappings
• Generalized additive functional inequalities in Banach algebras
• Lie $^*$-double derivations on Lie $C^*$-algebras
• Stability of the quadratic functional equation in non-Archimedean L-fuzzy normed spaces
• Stability of generalized QCA-functional equation in P-Banach spaces
• Intuitionistic fuzzy stability of a quadratic and quartic functional equation