# Union(∪) symbol in LaTeX

Symbol Union
Symbol type Mathematics
Package (requirement) No
Argument No
Latex command \cup
Example S1 \cup S2 → S1 ∪ S2

Union symbol looks like the English letter U. Which is represented by the command \cup in LaTeX.

You need to use the bigunion symbol when adding the set of numbers n for which you need to use the command \bigcup

\documentclass{article}
\begin{document}
$$a \cup b$$
$$S_1 \cup S_2$$
$$\bigcup_{i=1}^k F_i$$
$$\bigcup\limits_{i=1}^n S_i$$
\end{document}

Output :