# How to make math symbols like \prod smaller

I know this is simple, but I can't seem to find the correct code. If I have $d \prod$ how can I make the height of the \prod symbol equal to that of d?

Thanks!

• Why don't $d\Pi$? – karlkoeller Nov 17 '13 at 15:51
• BTW: Welcome to TeX.SX! You can have a look at our starter guide to familiarize yourself further with our format. – karlkoeller Nov 17 '13 at 16:45

Probably you are looking for the greek letter Π, which can be obtained with \Pi.

\documentclass{article}

\begin{document}
$d\;\Pi$
\end{document}


• Note that it’s common to set the d upright if it’s belongs to an integral or differential operation, i.e. \int f(x) \mathrm{d}x. You may define a new command \diff as \newcommand\dd{\,\mathrm{d}} and use \int f(x) \dd x. – Tobi Nov 17 '13 at 18:32
• @Tobi,that depends on tradition. I do not know many mathematicians who use upright 'd' (me neither). But several physicists do – daleif Nov 17 '13 at 21:36
• @daleif: I'm a physicist ;-) I prefer the upright version to differentiate between variable d and integral d. But I see many italic d's, and I guess that's because the tutors who write the excersies are too lazy … :-) – Tobi Nov 17 '13 at 23:16
• I think it is also esthetics. I think it looks strange – daleif Nov 18 '13 at 7:12