Charles-Ange Laisant
Charles-Ange Laisant | |
|---|---|
Mathematics journals Integral of inverse functions | |
| Scientific career | |
| Fields | Mathematics |
Charles-Ange Laisant (1 November 1841 – 5 May 1920), French politician and mathematician, was born at
École Polytechnique as a military engineer. He was a Freemason and a libertarian socialist.[2]
Politics
He defended the fort of
libel on General Courtot de Cissey in this paper he was heavily fined.[3]
In the Chamber he spoke chiefly on army questions; and was chairman of a commission appointed to consider army legislation, resigning in 1887 on the refusal of the Chamber to sanction the abolition of exemptions of any kind. He then became an adherent of the revisionist policy of
18th Parisian arrondissement in 1889.[3]
Mathematics
Laisant did not seek re-election in 1893, but devoted himself thenceforward to
Société Mathématique de France.[8]
The quaternion textbook was an abridgement of one by Jules Hoüel, and the text on equipollence further expanded on Bellavitis' methods.
He was attached to the staff of the École Polytechnique, and in 1903–1904 was president of the French Association for the Advancement of Science.[3]
The pedagogical journal,
L'Enseignement Mathématique, founded by Laisant and Henri Fehr in 1899, became the official organ of the International Commission on Mathematical Instruction in 1909.[9]
See also
- Laisant's recurrence formulafor the ménage numbers
References
- ^ Registration of birth : cf. French page
- ^ Guengant, Jean-Yves (2010-07-13), "LAISANT Charles, Ange", Le Maitron (in French), Paris: Maitron/Editions de l'Atelier, retrieved 2022-03-18
- ^ a b c d One or more of the preceding sentences incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Laisant, Charles Anne". Encyclopædia Britannica. Vol. 16 (11th ed.). Cambridge University Press. pp. 84–85. The Encyclopaedia Britannica article has the erroroneous "Anne" for the correct "Ange".
- ^ C.-A. Laisant (1874) "Essai sur les fonctions hyperboliques", link from Google Books
- ^ C.-A. Laisant (1874): French translation with additions of Bellavitis (1854) "Exposition de la méthode des equipollences", link from Google Books.
- ^ C.-A. Laisant (1881) Introduction a la Méthode des Quaternions, link from Google Books
- ^ C.-A. Laisant (1887) Theorie et Applications des Equipollence, Gauthier-Villars, link from University of Michigan Historical Math Collection
- ^ Anciens Présidents de la SMF — 1873–2006 Archived 2014-11-29 at the Wayback Machine.
- ^ One Hundred Years of "L'Enseignement Mathématique, Symposium of the EM-ICMI Symposium, 20-22 October 2000 (PDF). Geneva: L'Enseignement Mathématique. 2003.,
External links
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