Pi function

In mathematics, three different functions are known as the pi or Pi function:

$\pi (x)\,\!$ (pi function) – the prime-counting function
$\Pi (x)\,\!$ (Pi function) – the gamma function when offset to coincide with the factorial
Rectangular function

You might also be looking for:

$\prod _{n=1}^{\infty }$ – the Infinite product of a sequence

This disambiguation page lists articles associated with the title Pi function.
If an internal link led you here, you may wish to change the link to point directly to the intended article.