Deterministic Chaos

6.H. Mathematical Definition of Chaos

According to Devaney, a function f:RR exhibits deterministic chaos if it satisfies three properties:
sensitivity to initial conditions arbitrarily close to every point x, there is a point y with fn(x) and fn(y) iterating far apart.
dense periodic points arbitrarily close to every point x, there is a point y with fm(y) = y for some m.
mixing for every pair of intervals I and J, for some k fk(J) and I overlap.
Click each name to see a graphical examples of that characteristics.
The bad news and the good news of chaos.
The first technical use of the term chaos.
Recent updates on the three conditions defining chaos.

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