Formula_1930

\[\begin{gathered}s\left(\varphi_{1}, \varphi_{2}\right)=\sup _{x(t)} \int_{0}^{\infty}\left[\varphi_{2}(\mathbb{1})(1+t)^{-1}-\right. \\\left.-\varphi_{2}\left(y(t)^{*} y(t)\right)-t^{-1} \varphi_{1}\left(x(t) x(t)^{*}\right)\right] t^{-1} d t\end{gathered}\]