How to use Big Pi or product pi(Π) symbol in LaTeX?

You need to use the \Pi command to print the Big Pi symbol in a latex document. This is the default command of latex.

\documentclass{article}
\begin{document}
   \[ Big\; pi =\Pi  \]
\end{document}

Output :

Big pi with limits

You need to use \Pi_{subscript}^{superscript} command to write Limits with the Big Pie symbol. But I will not recommend this process when you use limits.

\documentclass{article}
\begin{document}
   \[ \Pi_{i=1}^\infty a_i  \]
   \[ \Pi_{i=1}^5 i^2 \]
\end{document}

Output :

As you can see in the example above, the symbol does not look very good with limits, so it is best to use the \prod command and use \prod_{subscript}^{superscript} to add limits. This is also a default latex command. Below are some examples.

\documentclass{article}
\begin{document}
   \[ \prod_{i=1}^\infty a_i  \]
   \[ \prod_{i=1}^5 i^2 \]
   \[ \prod_{i=1}^k \frac{n+1-i}{i} \]
\end{document}

Output :

Related posts :

• Pi(π) symbol in LaTeX
• Sigma, summation(Σ) symbol in LaTeX