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Unsolved Problems in Number Theory, Logic and Crytography

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dorabella Unsolved Problems in Number Theory, Logic and CrytographyTim Roberts has put together a site for amateur mathematicians and cryptographers. It is to encourage thought and discussion of some of the outstanding problems in number theory, logic and
cryptography.

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The picture is a cipher written by Sir Edward Elgar to a young companion that remains unsolved over 110 years after it was written. Not the best looking site (well excellent looking for 1998!) but the contents are fascinating. If you are into problem solving get dug in…

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