DSC_5395 - Chalkdust

David is a final year PhD student at UCL studying geometric group theory. When not doing maths he can usually be found singing or playing the flute.
davidsheard.co.uk/ + More articles by David

Crossnumber winners, issue 13
Did you solve it?
In conversation with Ulrike Tillmann
Sophie Maclean and David Sheard speak to a very top(olog)ical mathematician!
Page 3 model: Solitons
Solitons
Chalkdust issue 11 puzzle hunt #3
David Sheard sets the third puzzle. Can you solve it?
On the cover: Apollonian packing
David Sheard explores the rich mathematics and history behind the Apollonian packing, and the cover of issue 11
Oπnions: Can a horse have an Erdős number?
Lucy Rycroft-Smith reflects on the use of this well-established measurement