# Symbols:Brackets/Round Brackets/Open Interval/Deprecated

## Open Interval

$\tuple {a, b}$

The notation for a Open interval is more commonly seen as:

$\tuple {a, b} := \set {x \in S: a < x < b}$

However, as the $\tuple {a, b}$ notation is ambiguous, its use is deprecated on $\mathsf{Pr} \infty \mathsf{fWiki}$.

The $\LaTeX$ code for $\tuple {a, b}$ is \tuple {a, b} .