Cover image

The cover image has been generated using the ray-tracing application POV-Ray, which renders three-dimensional scenes. The three-dimensional structure of the tree in the image is defined by a set of recursive equations, similar to the fractals described in Chapter 8 of the book. Some other aspects, such as the positions of the ‘apples’, involve elements of randomness — another concept covered in the book.

Click here for a larger image.

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