More from Chalkdust
Oπnions: In defence of toy models
Calum gets on his soap box about toy models
Notched edge cards
Joe Celko makes a database from card and knitting needles
Significant figures: Sofya Kovalevskaya
Nora Koparan tells the story of the first female professor of mathematics
Cryptic wordsearch, Issue 19
Can you solve it?
On the cover: skyrmions
Sven Bjarke Gudnason and Calum Ross introduce you to the wonderful world of skyrmions
Roots: Pythagoras of Samos
Pythagoras gave us so much more than a² + b² = c²