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Link to original content: https://en.wikipedia.org/wiki/Duffing_map
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Duffing map

From Wikipedia, the free encyclopedia
Plot of the Duffing map showing chaotic behavior, where a = 2.75 and b = 0.15.
Phase portrait of a two-well Duffing oscillator (a differential equation, rather than a map) showing chaotic behavior.

The Duffing map (also called as 'Holmes map') is a discrete-time dynamical system. It is an example of a dynamical system that exhibits chaotic behavior. The Duffing map takes a point (xnyn) in the plane and maps it to a new point given by

The map depends on the two constants a and b. These are usually set to a = 2.75 and b = 0.2 to produce chaotic behaviour. It is a discrete version of the Duffing equation.

References

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