# Big Theta(Θ) symbol in LaTeX

Symbol/Unicode Big Theta/U+0398
Type of symbol Greek capital letter
Package (requirement) No
Argument No
Latex command \Theta
Example \Theta → Θ

Big Theta is a popular symbol in mathematics. You need to use the \Thetacommand to print this symbol in a latex document, and no package is required.

Below are some examples.

\documentclass{article}
\begin{document}
Prove that if $f(n)=\Theta (g(n)),\;g(n),\;$ then $g(n)=\Theta (f(n))$\\[6pt]
$R(N)\;\varepsilon\;\Theta\;(f(N))$
\end{document}

Output :