Anorak

Anorak | Not For Doughnuts

Not For Doughnuts

by | 7th, September 2004

‘FOR those of you who struggle with the Anorak Friday news quiz, here’s a poser: ‘The surface of an apple is simply connected. But the surface of a doughnut is not.’

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At this point, we advise all but Russian Grigiri Perelman, who is said to have solved this abstruse puzzle, to be called away to an urgent phone call and so avoid hearing the rest of the question and made to feel like said doughnut unconnected or otherwise.

To the Russian still looking in, here’s the rest: ‘How do you start from the idea of simple connectivity and characterise space in three dimensions?’

For an added clue, the poser is called the PoincarĂ© Conjecture and, says the Times, is one of the Clay Mathematics Institute’s seven great millennial mysteries of maths, each of which carries a $1m reward for the solving.

The only thing is that Perelman shows no sign of publishing his proof in

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Posted: 7th, September 2004 | In: Uncategorized Comment | Follow the Comments on our RSS feed: RSS 2.0 | TrackBack | Permalink