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Unsolved Problems in Number Theory, Logic, and Cryptography

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Visit this site: http://www.unsolvedproblems.org/

Author:Tim Roberts
Description: This site "concentrates only on problems which are easily understandable to the amateur.... explainable on a single screen (perhaps 200 words), using simple terminology." Read brief descriptions of open problems such as the Chromatic Number, the Collatz Problem, Dorabella Cipher, Euler's Brick, the Goldbach Conjecture, Legendre's Conjecture, Odd Perfect Number, the Riemann Hypothesis, the RSA Challenge, Square of Squares, Twin Primes, and the Voynich Manuscript. For a fee, publish solutions on unsolvedproblems.org, retaining your complete rights. For discussion of these problems and others, visit the moderated companion Yahoo group.

Levels: College, Research
Languages: English
Resource Types: Problems/Puzzles, Discussions, Preprints
Math Topics: Logic/Foundations, Number Theory, Cryptography

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