\item \self
 
The temporal operators describe properties that hold along a given infinite path $\rho$
through the computation tree of a Kripke structure. Given two formulas
$\varphi$ and $\psi$ describing state properties.
\begin{itemize}
    \item Which are the properties that $\rho$ needs to satisfy such that
    $\rho \vDash G\varphi$?
    \item Which are the properties that $\rho$ needs to satisfy such that
    $\rho \vDash F\varphi$?    
    \item Which are the properties that $\rho$ needs to satisfy such that
    $\rho \vDash X\varphi$?    
    \item Which are the properties that $\rho$ needs to satisfy such that
    $\rho \vDash \varphi U \psi$?      
\end{itemize}