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242 II Seeing How It Works<br />

It’s fun to see how maximal elements change in this process. There’s plenty of opportunity<br />

to try all sorts of things with algebras, shapes, and rules.<br />

Fractals introduce a different kind of symmetry. They’re also formed when transformations<br />

of a shape are added up—now using rules in the schema<br />

x fi X tðxÞ<br />

What’s different here is that scale may be conspicuously involved. Try the rule<br />

to get the shapes in the series

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