.png){kind=link}
 - Vertical.png){kind=link}
.png){kind=link}
 - Vertical.png){kind=link}
.svg){kind=link}
.png){kind=link}
error function
Error function
In mathematics, the error function (also called the Gauss error function), often
denoted by erf, is a complex function of a complex variable defined as:
erf z = 2/sqrt(pi)I(e^(-t^2)dt):0-z
Two closely related functions are:
Complementary error function (erfc)
erfc z = 1 - erf z, and
Imaginary error function (erfi)
erfi z = -i erf iz