Columbia subject headings:
Differentiable dynamical systems.
Ergodic theory.
Perturbation (Mathematics)
Stability.
Harvard subject headings:
Differentiable dynamical systems.
Ergodic theory.
Perturbation (Mathematics)
Stability.
Princeton subject headings:
Differentiable dynamical systems.
Ergodic theory.
Perturbation (Mathematics)
Stability.