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Zaslavskii map

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Dynamical system that exhibits chaotic behavior
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Zaslavskii map with parameters: ϵ = 5 , ν = 0.2 , r = 2. {\displaystyle \epsilon =5,\nu =0.2,r=2.}

The Zaslavskii map is a discrete-time dynamical system introduced by George M. Zaslavsky. It is an example of a dynamical system that exhibits chaotic behavior. The Zaslavskii map takes a point ( x n , y n {\displaystyle x_{n},y_{n}} ) in the plane and maps it to a new point:

x n + 1 = [ x n + ν ( 1 + μ y n ) + ϵ ν μ cos ( 2 π x n ) ] ( mod 1 ) {\displaystyle x_{n+1}=\,({\textrm {mod}}\,1)}
y n + 1 = e r ( y n + ϵ cos ( 2 π x n ) ) {\displaystyle y_{n+1}=e^{-r}(y_{n}+\epsilon \cos(2\pi x_{n}))\,}

and

μ = 1 e r r {\displaystyle \mu ={\frac {1-e^{-r}}{r}}}

where mod is the modulo operator with real arguments. The map depends on four constants ν, μ, ε and r. Russel (1980) gives a Hausdorff dimension of 1.39 but Grassberger (1983) questions this value based on their difficulties measuring the correlation dimension.

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References

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