The theory of instability and chaos criteria

We give a summary of the theory of instability. A summary of the theory of instability is given. This physical theory considers all possible phenomena of instability. Here a complete picture of the theory is given. It consists of three main sections. The first section contains the main points: the definition of instability, the basic concepts, the system of laws and principles. The second section constitute the basic methods of obtaining criteria of instability and chaos, and their application to model problems. The third section examines models of real systems. Then we follow this scheme. Along with the previously used is found a new method of non-linear range. An example is the electronic generator model.