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Debate surrounds $25000 prize won by undergraduate for
universal Turing machine problem
CAPTCHA if they can
A test invented by the mathematician Alan Turing in 1950 is helping to stop spammers.
What computers can't do
looks at the life and work of wartime code-breaker Alan Turing. Find out what types of numbers we
count and why there are limits on what can be achieved with Turing machines.
From Arsenal to RSA: An interview with Marcus du Sautoy
Marcus du Sautoy talks about football, cryptography, and numbers.
The LHC and the dark matter mystery
What is dark matter and how can the LHC find it?
Maths in a minute: Tiling troubles
Why there are only three regular polygons you can tile a wall with.
How a special kind of curve can keep your data safe.
Maths in a minute: Pretend primes
Fermat's little theorem and fake primes.
Tweets by @plusmathsorg
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