[see also: contrary]
We must have $Lf=0$, for otherwise we can replace $f$ by $f-Lf$.
We claim that $f(z)>1$. Otherwise, the disc $D$ would intersect $B$.
We now prove ...... Indeed, suppose otherwise. Then ......
Unless otherwise stated, we assume that ......
Moreover, for $L$ tame or otherwise, it may happen that $E$ is a free module.
Simplicity (or otherwise) of the underlying graphs will be discussed in the next section.