Jacobi triple product
= Jacobi triple product
{c}
{wiki}
For $|q|<1$ and $z\ne0$, the Jacobi triple product is
$$
\sum_{n\in\mathbb Z}z^nq^{n^2}
=\prod_{m\geq1}(1-q^{2m})(1+zq^{2m-1})(1+z^{-1}q^{2m-1}).
$$
= Jacobi triple product
{c}
{wiki}
For $|q|<1$ and $z\ne0$, the Jacobi triple product is
$$
\sum_{n\in\mathbb Z}z^nq^{n^2}
=\prod_{m\geq1}(1-q^{2m})(1+zq^{2m-1})(1+z^{-1}q^{2m-1}).
$$