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2.4: Iterations of inverse quadratic maps

  • Page ID
    101391
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    Repelling periodic orbits are dense on the Julia set. They become attracting if we iterate inverse function

        fc -1 = ±(z - c)½,

    therefore we can use iterations of the map to plot the J set to the right below.

    2.4.1.png
    Figure \(\PageIndex{1}\)
    2.4.2.jpg
    Figure \(\PageIndex{2}\)
    2.4.3.png
    Figure \(\PageIndex{3}\)

    Douady's Rabbit, Dendrite and Cantor dust Julia sets illustrate inverse iterations. In this script the sign of z½ is chosen at random. Points are gathered at the outer border of J and its inner structure is vague.

     


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