[Visitor (120.204.*.*)]answers [Chinese ]  Time :20210922  The Math Problem was selected for Hilbert's lecture "Mathematics Problem" at the International Congress of Mathematicians in Paris in 1900. The 23 mathematical problems he put forward in his lecture stimulated the imagination of the whole mathematics circle and promoted the development of mathematics in the 20th century. In this lecture, Hilbert also expounded his incisive views on the nature of mathematics, the source of mathematical knowledge, the importance of mathematical problems and research methods. 
