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Careers with maths
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From satellites to the London Olympics, all in one career

A favourite from the archive...
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Discover why the number 6174 is so mysterious.

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September 2008
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internet security

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The number chosen by the England captain for his Real Madrid shirt is rich in mysterious connotations. But mathematician Marcus du Sautoy backs a new theory to explain why Beckham has plumped for number 23.

Tags: prime number : encryption : Riemann Hypothesis : internet security


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A crisis in cryptography?

Tags: internet security : hash algorithm