Andronov-Hopf bifurcation

with the very concept of bifurcation.
The main scenario of the bifurcation behavior of the system is the occurrence, at λ, close to λ0, in the vicinity of the equilibrium point x of nonstationary small-amplitude periodic solutions. This scenario is called the Andronov – Hopf bifurcation. It is possible only in systems of dimension N> 2.
The Andronov – Hopf bifurcation is the most interesting scenario of a qualitative reorganization of a dynamic system in a neighborhood of equilibrium points. This phenomenon is widespread: they explain the appearance of self-oscillations in many technical structures: “flutter” in aircraft structures, self-oscillations in electrical circuits, fluctuations in velocity in a fluid flow, etc.