Mittag-Leffler function

Etymology
Named after.

Proper noun

 * 1)  A complex function defined as $$E_{\alpha, \beta} (z) = \sum_{k=0}^\infty \frac{z^k}{\Gamma(\alpha k + \beta)}$$, where $$\Gamma(x) $$ is the gamma function.
 * The Mittag-Leffler function can be used to interpolate continuously between a Gaussian and a Lorentzian function.