an First Order ODE is “autonomous” when:
\begin{equation} y’ = f(y) \end{equation}
for some \(f\) of one variables. Meaning, it only depends on the independent variable \(t\) through the use of \(y(t)\) in context.
This is a special class of seperable diffequ.
autonomous ODEs level off at stationary curves
for autonomous ODEs can never level off at non-stationary points. Otherwise, that would be a stationary point.
See stability (ODEs)
time-invariant expressions
For forms by which:
\begin{equation} y’ = f(y) \end{equation}
as in, the expression is time invariant.