Fractals are mathematical representations of arbitrarily complex objects.
The most famous of these produce beautiful pictures which tend to imitate the complex shapes of things found in nature like snowflakes, and ferns. An IFS, pioneered by Barnsley, is expressed as a series of transforms, and the transforms are applied randomly to a point. This normally results in a picture that gradually fills in as it grows. Both mathematical and programming examples will be used to explain these concepts. Tea and doughnaughts will be served.