\[{{}_{r+1}\phi_{s}}\left({a_{0},a_{1},a_{2},\dots,a_{r}\atop b_{1},b_{2},\dots,%
b_{s}};q,z\right)={{}_{r+1}\phi_{s}}\left(a_{0},a_{1},\dots,a_{r};b_{1},b_{2},%
\dots,b_{s};q,z\right)=\sum_{n=0}^{\infty}\frac{\left(a_{0};q\right)_{n}\left(%
a_{1};q\right)_{n}\cdots\left(a_{r};q\right)_{n}}{\left(q;q\right)_{n}\left(b_%
{1};q\right)_{n}\cdots\left(b_{s};q\right)_{n}}\*\left((-1)^{n}q^{\genfrac{(}{%
)}{0.0pt}{}{n}{2}}\right)^{s-r}z^{n}.\]