Formula_20450

\[\begin{gathered}Q \varphi_{q}=q \varphi_{q}, \varphi_{q}(x)=\delta(x-q) ; \\P \varphi_{p}=p \varphi_{p}, \quad \varphi_{p}(x)=\frac{1}{\sqrt{2 \pi}} e^{-i p x}\end{gathered}\]