Node (dynamical systems)
= Node
{disambiguate=dynamical systems}
= Node
{synonym}
= Node equilibrium
{synonym}
A planar equilibrium with real nonzero <eigenvalues> of the same sign. Negative eigenvalues give a <stable node>; positive eigenvalues give an <unstable node>. Repeated real eigenvalues may give a degenerate or improper node, depending on the eigenspace.