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Abstract

Motivated by Problem 2 in \cite{mol1}, Jordan $*$-derivation pairs and $n$-Jordan $*$-mappings are studied. From the results on these mappings, an affirmative answer to Problem 2 in \cite{mol1} is given when $E=F$ in (1) or when $\mathcal{A}$ is unital. For the general case, we prove that every Jordan $*$-derivation pair is automatically real-linear. Furthermore, a characterization of a non-normal prime $*$-ring under some mild assumptions and a representation theorem for quasi-quadratic functionals are provided.