- Category : 1861-births
- Type : PSP
- Profile : 2/4 - Hermit / Opportunist
- Definition : Single
- Incarnation Cross : RAX Service 4
French mathematician elected to the Academy of Sciences in 1904, as an associate member of the Royal Belgian Academy in 1920, and as a Knight of the Legion of Honour in 1921. He was a member and then chairman of the review committee at the special military school of Saint-Cyr from 1907 to 1923.
He died on 6 May 1924 in Paris, aged 62.