  Let $\calA_+$ denote the set of Laplace transforms of complex Borel measures
$\mu$ on $[0,+\infty)$ such that $\mu$ does not have a singular non-atomic
part. In \cite{BalSas}, an extension of the classical $\nu$-metric of
Vinnicombe was given, which allowed one to address robust stabilization
problems for unstable plants over $\calA_+$. In this article, we show that this
new $\nu$-metric gives a topology on unstable plants which coincides with the
classical gap topology for unstable plants over $\calA_+$ with a single input
and a single output.
