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Dear Joe and rp-listAn engineer, a physicist and a mathematician get 1 and

1 to add. The engineer takes hispocket calculator, types and says 2. The

physicist makes a few attempts, after one hour he says: the result is 2

plus minus 0.1. The mathematician comes on the next day, he not yet has the

result, but he can prove that it exists.

Iit's quite the same with pi. The engineer takes his pocket calculator and

knows what pi is. The physicist is happy to know how exact his result is

but the mathematician has much problems with pi.

Pi is not even not a rational number but even not an algebraic number, that

means you cannot express pi by an equation x*x -? = 0. Even as most numbers

are not algebraic, only a few of them are known. Thats why mathematicians

are happy to know pi.

Dr. Heinz Stucki

University of Zurich

Dear

For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/

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