\[{{}_{p}F_{q}}\left({a_{1},\dots,a_{p}\atop b_{1},\dots,b_{q}};\mathbf{H}%
\mathbf{T}\mathbf{H}^{-1}\right)={{}_{p}F_{q}}\left({a_{1},\dots,a_{p}\atop b_%
{1},\dots,b_{q}};\mathbf{T}\right),\]