MacTutor
18th November
On this day in 1752, Christian Goldbach wrote to Euler conjecturing that any odd number could be written in the form where p is prime. A counterexample was found in 1856.
The postage stamp of one of today's mathematicians at THIS LINK was issued in 2014.
The postage stamp of one of today's mathematicians at THIS LINK was issued in 2014.