Definition:Real Interval/Open

Definition

Let $a, b \in \R$.

The open (real) interval from $a$ to $b$ is defined as:

$\openint a b := \set {x \in \R: a < x < b}$

Technical Note

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

This is a custom $\mathsf{Pr} \infty \mathsf{fWiki}$ command designed to implement Wirth interval notation.