splash - Chalkdust

Calum is a lecturer in physics at Edge Hill University where he studies topological solitons and enjoys talking about maths and physics to anyone who will listen. He can often be found on the side of a mountain or out on a bike, talking to himself about solitons.

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
Significant figures: David Singmaster (1938–2023)
Colin Wright remembers the puzzle giant with a passion for sharing
Formal sums
Nik Alexandrakis explains what they are and what they can tell us
Dear Dirichlet, Issue 12
Books, business and barns are the topics readers have sent in to the professor's postbox this issue
On √2
Yiannis Petridis connects square roots and continued fractions

More from Chalkdust

Cryptic wordsearch, Issue 19

On the cover: skyrmions

Significant figures: David Singmaster (1938–2023)

Formal sums

Dear Dirichlet, Issue 12

On √2