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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.

Oπnions: In defence of toy models
Calum gets on his soap box about toy models
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
David Blackwell and me
Clive Fraser reflects on his interactions with one of the greatest ever Black mathematicians
In conversation with Tanniemola Liverpool
As part of Black Mathematician Month, we spoke to the Bristol University professor about access schemes and the importance of mentors.
Feeling the love for Chalkdust T-shirts
The algebra will set your heart aflutter.