April 18, 1949 (Year of the OX March 21), the mathematician Feifu Man was born in Washington, DC.

1949 4, 18, mathematician Feifu Man was born in Washington, DC "target =" _blank "> Feifu Man was born in Washington. Feifu Man in 1973 found that the trigonometric series converges problem with singular integral operator have a close intrinsic relationship to the child two unrelated areas, thus promoting the development of entire field; still in partial differential equations and several complex variables theory has an important contribution to this end he won the 1978 mathematics the highest award of the Fields Medal, when he was under 30 years of age.