
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.
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Dear Dirichlet, Issue 21
Suits, sofas and sculptures punctuate the prof's postbag this issueOπnions: In defence of toy models
Calum gets on his soap box about toy modelsMarkov unchained
Ashleigh Wilcox looks for integer solutions to the Markov equationCryptic wordsearch, Issue 19
Can you solve it?On the cover: skyrmions
Sven Bjarke Gudnason and Calum Ross introduce you to the wonderful world of skyrmionsHow much hair?
Thomas Sperling discusses some furry Fermi problems