\{ \}Curly braces are used as delimiters in LaTeX to group expressions or to denote sets. They are essential for defining the scope of commands and environments, and are also used in mathematical expressions to represent sets.
A set containing elements a, b, and c
\{ a, b, c \}Piecewise function using curly braces to define different cases
f(x) = \begin{cases} x^2, & \text{if } x \geq 0 \\ -x, & \text{if } x < 0 \end{cases}Set notation for all x greater than 0
\text{The solution set is } \{ x \mid x > 0 \}