\begin{definition}[Definition:Propositional Function/Satisfaction]
Let $\map P {x_1, x_2, \ldots, x_n}$ be an $n$-ary propositional function.
If $a_1, a_2, \ldots, a_n$ have values which make $\map P {x_1, x_2, \ldots, x_n}$ true, then the ordered tuple $\tuple {a_1, a_2, \ldots, a_n}$ '''satisfies''' $\map P {x_1, x_2, \ldots, x_n}$.
\end{definition}