\begin{definition}[Definition:Schwartz Space]
Let $\phi: \R \to \C$ be a Schwartz test function.
Then the set of all $\phi$ is called the '''Schwartz space''' and is denoted by $\map {\SS} \R$.
{{NamedforDef|Laurent-Moïse Schwartz|cat = Schwartz}}
\end{definition}