Fungrim entry: 1842d9

\theta^{(r)}_{4}\!\left(z , \tau\right) = {\left(2 \pi i\right)}^{r} \sum_{n=-\infty}^{\infty} {\left(-1\right)}^{n} {n}^{r} {q}^{{n}^{2}} {w}^{2 n}\; \text{ where } q = {e}^{\pi i \tau},\;w = {e}^{\pi i z}

Assumptions:

z \in \mathbb{C} \;\mathbin{\operatorname{and}}\; \tau \in \mathbb{H} \;\mathbin{\operatorname{and}}\; r \in \mathbb{Z}_{\ge 0}

TeX:

\theta^{(r)}_{4}\!\left(z , \tau\right) = {\left(2 \pi i\right)}^{r} \sum_{n=-\infty}^{\infty} {\left(-1\right)}^{n} {n}^{r} {q}^{{n}^{2}} {w}^{2 n}\; \text{ where } q = {e}^{\pi i \tau},\;w = {e}^{\pi i z}

z \in \mathbb{C} \;\mathbin{\operatorname{and}}\; \tau \in \mathbb{H} \;\mathbin{\operatorname{and}}\; r \in \mathbb{Z}_{\ge 0}

Definitions:

Fungrim symbol	Notation	Short description
`JacobiTheta`	$\theta_{j}\!\left(z , \tau\right)$	Jacobi theta function
`Pow`	${a}^{b}$	Power
`Pi`	$\pi$	The constant pi (3.14...)
`ConstI`	$i$	Imaginary unit
`Sum`	$\sum_{n} f(n)$	Sum
`Infinity`	$\infty$	Positive infinity
`Exp`	${e}^{z}$	Exponential function
`CC`	$\mathbb{C}$	Complex numbers
`HH`	$\mathbb{H}$	Upper complex half-plane
`ZZGreaterEqual`	$\mathbb{Z}_{\ge n}$	Integers greater than or equal to n

Source code for this entry:

Entry(ID("1842d9"),
    Formula(Equal(JacobiTheta(4, z, tau, r), Where(Mul(Pow(Mul(Mul(2, Pi), ConstI), r), Sum(Mul(Mul(Mul(Pow(-1, n), Pow(n, r)), Pow(q, Pow(n, 2))), Pow(w, Mul(2, n))), For(n, Neg(Infinity), Infinity))), Equal(q, Exp(Mul(Mul(Pi, ConstI), tau))), Equal(w, Exp(Mul(Mul(Pi, ConstI), z)))))),
    Variables(z, tau, r),
    Assumptions(And(Element(z, CC), Element(tau, HH), Element(r, ZZGreaterEqual(0)))))

Topics using this entry

Series and product representations of Jacobi theta functions