Primero vinieron…
See also: the Valley-Chick
Charles-Jean Etienne Gustave Nicolas, baron of the Vallée Chick (born the August 14th 1866 with Leuwen, dead the March 2nd 1962 with Brussels) is a Belgian Mathématicien .
He is known to have shown (simultaneously and independently with Hadamard) the Théorème of the prime numbers by using the methods of the Analyze complexes.
Biography
He is born in Leuwen, on August 14th, 1866. His/her father, Charles Louis Joseph Xavier de la Vallee poussin (1827-1903), was during nearly forty years professor of mineralogy and geology to the catholic Université of Leuwen. He studies at the Joséphites, with the College of the Holy Trinity in Leuwen, and then as intern with the Saint-Stanislas College, at the Jésuites of Mons.
In 1883, it begins studies in faculty of philosophy at the catholic University of Leuwen. It becomes in 1890 civil engineer of the mines and 1890 doctor of mathematical and physical sciences.
As from 1891, it ensures the University of Louvain the courses of differential and integral calculus. During the second half-year of the academic year 1892-1893, it follows to Paris the courses of Camille Jordan, Henri Poincaré and Emile Picard, while in 1893-1894 it follows to Berlin those of Hermann Schwarz, of Ferdinand Frobenius and Lazarus Fuchs.
During the First World War, it gives courses to the Université of Harvard during one six-month period in 1915, with the Collège de France in 1916, the Sorbonne in 1916-1917, the Université of Geneva in 1917-1918 and in the Sorbonne still in 1918.
It was the first with being elected president of the international mathematical Union in 1920. It was anobli in 1930 by the king Albert Ier.
In 1920, it directed the report of license of the cosmologist Georges Lemaître, on the approximation of functions of several variables.
External bond
- Biography in English
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