On the 7th of June in the year of our Lord 1742, Prussian mathematician Christian Goldbach wrote a letter to his famous colleague Leonard Euler, which should make history. Well, at least in the mathematical world. In this letter Christian Goldbach refined an already previously stated conjecture from number theory concerning primes to his friend Euler, which by today is known as the famous Goldbach conjecture.
F. Charles. (2012)cite arxiv:1206.4002Comment: 20 pages, minor changes. Theorem 4 is stated in greater generality, but proofs don't change. Comments still welcome.
H. Cao, и X. Zhu. (2006)cite arxiv:math/0612069Comment: This is a revised version of the article by the same authors that originally appeared in Asian J. Math., 10(2) (2006), 165--492.