More from Chalkdust
What’s hot and what’s not, Issue 15
Fashion is fleeting, Chalkdust regulars are not.
Thinking outside the box
Negative polygons and other mathematical creations
Switching sides in a matrix equation
Looking for a neat description of this useful matrix part-inverse
Finding the edge of your images
How can we identify objects in photos, to diagnose cancer or predict the weather? Using gradients!
Victorian maths tricks with old money
Exploring mental arithmetic tricks in T. Martin's 1842 guide, 'Pounds, shillings and pence'
Top Ten: Mathematicians’ haircuts
The undisputed Top Ten Mathematicians' Haircuts!