Definition:Archimedean Property/Norm

Definition
Let $\left({S, \circ}\right)$ be a semigroup.

Let $\cdot: \N_{>0} \times S \to S$ be defined as:
 * $\forall a \in S: \forall m \in \N_{>0}: m \cdot a = \begin{cases}

a & : m = 1 \\ a \circ \left({\left({m - 1}\right) \cdot a}\right) & : m > 1 \end {cases}$

Let $n: S \to \R$ be a norm on $S$.

Then $n$ satisfies the Archimedean property on $S$ iff:
 * $\forall a, b \in S: n \left({a}\right) > 0 \implies \exists m \in \N_{>0}: n \left({m \cdot a}\right) > n \left({b}\right)$