1. Isaac Mathieu Weill was a French mathematician and principal of the College Chaptal.

1. Isaac Mathieu Weill was a French mathematician and principal of the College Chaptal.
Mathieu Weill was born to a Jewish family in Haguenau, the son of Valentine and Isidore Weill, a mathematics teacher.
Mathieu Weill was educated in the lyceums of Burg and Strasburg, and was admitted to the Ecole Polytechnique in 1870.
Mathieu Weill received a degree in mathematics in November 1872, and a degree in physical sciences in November 1876.
Meanwhile, Weill began studies at the military school in Fontainebleau in 1872.
Mathieu Weill attained the rank of lieutenant of artillery, but resigned in April 1877.
Mathieu Weill married Delphine Levi in 1878, with whom he had four children.
Mathieu Weill was appointed professor of mathematics in 1881, and in October 1898 the school's principal.
Mathieu Weill was appointed Chevalier of the Legion of Honour on 28 February 1904.
Mathieu Weill published several essays in French mathematical journals, including the Nouvelles Annales de Mathematiques and the Bulletin de la Societe Mathematique de France.
Mathieu Weill was the author of "Cours de Geometrie Analytique" and of "Precis d'Arithmetique, de Geometrie, d'Algebre, de Trigonometrie," in four volumes.