Elliptic Gamma Function

In mathematics, the elliptic gamma function is a generalization of the q-Gamma function, which is itself the q-analog of the ordinary Gamma function. It is closely related to a function studied by Jackson (1905), and can be expressed in terms of the triple gamma function. It is given by

\Gamma (z;p,q) = \prod_{m=0}^\infty \prod_{n=0}^\infty \frac{1-p^{m+1}q^{n+1}/z}{1-p^m q^n z}.

It obeys several identities:

and

where θ is the q-theta function.

When, it essentially reduces to the infinite q-Pochhammer symbol:

Famous quotes containing the word function:

    “The function of comedy is to dispel ... unconsciousness by turning the searchlight of the keenest moral and intellectual analysis right on to it.”
    —George Bernard Shaw (1856–1950)