Paley-Wiener Type Theorems associated to Dirac Operators of Riesz-Feller type

This paper explores Paley-Wiener type theorems within the framework of hypercomplex variables. The investigation focuses on a space-fractional version of the Dirac operator $\mathbf{D}_θ^α$ of order $α$ and skewness $θ$. The pseudo-differential reformulation of $\mathbf{D}_θ^α$ in terms of the Riesz