Math & Crochet

Math and Crochet, two of my favorite hobbies!
I play with the numbers everytime I crochet a project; thinking about different number series as I increase in a round, calculating what fraction of the round I've worked on a doily, calculating different sizes of projects based on pattern multiple; I love it!
See what happens if you combine math and crochet, not just for hobbies and personal fun, but with serious math and science understanding:
"Lorenz Manifold"
"Hyperbolic Crochet Coral Reef"

If you find more examples of science and math modeling using crochet, please comment here with links.