# Difference between revisions of "Hilger real axis"

Let $h>0$. We define the Hilger real axis by $$\mathbb{R}_h = \left\{ z \in \mathbb{R} \colon z > -\dfrac{1}{h} \right\},$$ and for $h=0$, we let $\mathbb{R}_0=\mathbb{R}$.