Pierre Fatou AKA Pierre Joseph Louis Fatou Born: 28Feb1878 Birthplace: Lorient, France Died: 10Aug1929 Location of death: Pornichet, France Cause of death: Abdominal Hemorrhage
Gender: Male Race or Ethnicity: White Occupation: Mathematician, Astronomer Nationality: France Executive summary: Complex analytic dynamics French mathematician Pierre Fatou studied integration theory and complex function theory, and was the first to define what is now called the Mandelbrot set, in 1905. He developed a fundamental theory of iteration in 1917 (concurrent with Gaston Julia), showed that a harmonic function u > 0 in a ball has a nontangential limit at almost every point on the boundary, and examined the convergence and the analytic extension of the Taylor series. Despite his accomplishments in mathematics, Fatou was unable to find work in that field, and instead spent his entire career at the Paris Observatory, where he conducted respected research on double stars. High School: Collège Stanislas de Paris University: BA Mathematics, École Normale Supérieure University: PhD Mathematics, École Normale Supérieure (1907) Scholar: Ass't Astronomer, Paris Observatory (190128) Professor: Astronomy, Paris Observatory (192829)
French Legion of Honor
Author of books:
Séries trigonométriques et séries de Taylor (1906, mathematics) Fonctions automorphes (1929, mathematics)
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