The Spherical $\pi$-Operator
  In this article, we define the spherical $\pi$-operator over domains in the $(n-1)$-D unit sphere $S^n$ of $R^n$ and develop new and analogous results on the operator it self and its mapping properties. We introduce the spherical Dirac operator $\Gamma_\alpha$ as an $\alpha$- shift of of $\Gamma_omega$, where $\Gamma_omega$ is the negative of the wedge (or Grassmann) product of $\omega$ with that of the Dirac operator $D_\omega$. A gegenbauer polynomial is used as a Cauchy kernel for the spherical Dirac operator $\Gamma_alpha$. 
Dejenie A. Lakew