Singular conformally invariant trilinear forms and covariant differential operators on the sphere

Jean-Louis Clerc

Let $G=S{O}_0(1,n)$ be the conformal group acting on the $(n-1)$ dimensional sphere $S$, and let $({\pi }_{\lambda }{)}_{\lambda \in \mathbb{C}}$ be the spherical principal series. For generic values of $\b…