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Prize crossnumber, Issue 18
Can you solve it?An invitation to category theory
Just what is category theory? Tai-Danae Bradley explainsClosing the first Black Mathematician Month
Reflecting on what we've learnt over the past few weeks.Forget a new £1 coin, we need a £1.23 coin
Not the new coin we want, but the new coin we needThe digital sum of the products of twin primes is 8?
What connects the products of twin primes with something you learnt in primary school and the number 8?Klaus Roth
(1925 - 2015)