The mathematics journal *Mathematical Intelligencer* has published some intriguing instructions on how to crochet your very own model of chaos. Hinke Osinga and Bernd Krauskopf – both of Bristol University’s Department of Engineering Mathematics – have turned the Lorenz equations that describe the nature of chaotic systems into a real-life object, by crocheting computer-generated instructions.

“Imagine a leaf floating in a turbulent river and consider how it passes either to the left or to the right around a rock somewhere downstream. Those special leaves that end up clinging to the rock must have followed a very unique path in the water. Each stitch in the crochet pattern represents a single point [a leaf] that ends up at the rock,” said Osinga (left of picture).

The final result took Osinga about 85 hours to complete and contains 25,511 crochet stitches.

*Crochet your own Lorenz manifold at www.enm.bris.ac.uk/anm/preprints/2004r03.html*

*Pic courtesy University of Bristol*

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