The cusp catastrophe. Rich Morris (singsurg.org), CC BY-NC-SA 4.0
More from Chalkdust
Crossnumber winners, issue 11
Did you solve it?
Talkdust, episode 1
A podcast for the mathematically curious
Creating hot ice
We created hot ice from scratch, a solution that remains liquid even below its freezing point!
Curiouser and curiouser!
Some surprising mathematical facts
Find your perfect partner
Find your perfect partner with this wonderful tree diagram!
Christmas cracker joke II
This post was part of the Chalkdust 2016 Advent Calendar. Newton: "Are you going to the Fibonacci themed Christmas party?" Euler: "Yes! I heard it's going to be as big as the two previous years put together."