# How do I get \DeclareMathOperator to put the limit beneath? [duplicate]

I use at the picture above: \DeclareMathOperator{\vo}{vol}
And this is the complete line:

$\lim_{a}=\vo_{a}$


I can make that the a will be below the vol? (like the lim).

Thank you!!

Use the starred version of the command: \DeclareMathOperator*
\documentclass{article}
$\lim_{a}=\vo_{a}$