# Symbol of continuous product

1. May 23, 2014

### Jhenrique

If the discrete summation is symbolized by $\sum$ and the continous by $\int$, so, by analogoy, the discrete product is symbolized by $\prod$ and you already thought what is the symbol for the continuous product?

2. May 23, 2014

### Simon Bridge

It's called a "product integral" and has symbol:

$\prodi$ ... drat PFLatex may not have one!

Looks like: $\int\!\!\!\!\!\times$ or $\int\!\!\!\!_P$ though I figure a cap-pi would work too ... since the sum-integral symbol is $\int\!\!\!\!\! _\Sigma$ ... the display mode would look like:
$$\int\!\!\!\!\!\!\times\; ,\qquad \int\!\!\!\!\!\! P\; ,\qquad \int\!\!\!\!\!\! \Pi$$

... or a tall, elongated, but lower-case letter "pi".

Usually acceptable to just use the regular discrete product $\Pi$ since the context can make the meaning clear.

Last edited: May 23, 2014