Fatou
# Pierre Joseph Louis Fatou

### Born: 28 Feb 1878
in Lorient, France

Died: 10 Aug 1929
in Pornichet, France

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**Pierre Fatou** worked in Paris. He studied the motion of a planet in a resistant medium. He also studied Taylor series and the Lebesgue integral. Fatou was interested in rational functions of a complex variable. Perhaps Fatou's most famous result is that a harmonic function u > 0 in a ball has a nontangential limit almost everywhere on the boundary.
**References (3 books/articles)**

JOC/EFR December 1996