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Joe Celko makes a database from card and knitting needles
In conversation with Martin Hairer
We talk to the Fields medallist about his life, his work and his advice to his younger self.
Top ten vote issue 15
Have your say
Kepler’s barrels
Sam Hartburn orders wine by the barrel, but wonders if she's getting the most wine
Domino tiling & domineering
John Dore and Chris Woodcock join the dots
Puzzles, Issue 03
Solve the puzzles that appeared in Issue 03.