Hilbert's problems are a list of twenty-three problems in
mathematics published by
German mathematician David Hilbert in 1900. The problems were all unsolved at the time, and several of them were very influential for 20th century mathematics. Hilbert presented ten of the problems (1, 2, 6, 7, 8, 13, 16, 19, 21 and 22) at the
Paris conference of the
International Congress of Mathematicians, speaking on August 8 in the
Sorbonne. The complete list of 23 problems was published later, most notably in English translation in 1902 by
Mary Frances Winston Newson in the
Bulletin of the American Mathematical Society.