# Ohm symbol[Big Omega](Ω) symbol in LaTeX

Symbol/Unicode Ohm symbol[Big Omega]/U+03A9
Type of symbol Greek capital letter
Package (requirement) No
Argument No
Latex command \Omega
Example \Omega → Ω

Big Omega notation or function is denoted by the Greek capital letter Omega. For this, the simplest command in latex is \Omega.

\documentclass{article}
\begin{document}
$$f(n)=\Omega(g(n))$$
$$2N+3N^2=\Omega(N^2)$$
\end{document}

Output :

Omega symbol is also used for resistance unit in physics. Of course, there are different packages like Siunits. However, the whole work was completed with the help of the following simple method.

\documentclass{article}
\begin{document}
$$10\mu\Omega$$
$$R_1=10\Omega$$
$$10\Omega-6\Omega=4\Omega$$
\end{document}

Output :