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Jules Hoüel

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Jules Hoüel
Guillaume-Jules Hoüel
Born(1823-04-07)7 April 1823
Died14 June 1886(1886-06-14) (aged 63)
Alma materÉcole Normale Supérieure
Known forLobachevski & Bolyai translations
Quaternion textbook
Scientific career
InstitutionsBourges, Bordeaux
Pau, Pyrenees-Atlantiques
Alencon, Caen
Doctoral studentsCharles-Ange Laisant

Guillaume-Jules Hoüel (7 April 1823 – 14 June 1886) was a French mathematician. He entered the École Normale Supérieure in 1843 and received his doctoral degree in 1855 from the Sorbonne. He was sought by Urbain Le Verrier at the Paris Observatory, but chose instead to return to Thaon to study there. In 1859 he began to teach at Bordeaux.

In 1863 Hoüel expressed his doubts about the verifiability of the parallel postulate of Euclid.[1]

In 1867 Hoüel produced French translations of two key publications of non-Euclidean geometry: Lobachevski's Geometrical Studies on the Theory of Parallels[2] and Bolyai's Science of Absolute Space.[3]

Hoüel published a four volume work titled Théorie Élémentaire des Quantités Complexes. Volume four, published in 1874, began with an discussion of properties of algebraic operations (commutativity, associativity, distribution, and inverses) and used the algebra of quaternions and versors to describe spherical trigonometry.[4] However, in 1890 P. G. Tait revealed his dissatisfaction with Hoüel's changes in notation with text that Tait had given for Hoüel's use. Tait wrote:[5]

The earliest offender in this class was the late M. Hoüel who, while availing himself of my permission to reproduce, in his Théorie Élémentaire des Quantités Complexes, large parts of this volume, made his pages absolutely repulsive by introducing fancied improvements in the notation.

In 1876 Hoüel reviewed a Russian language quaternion textbook written by Romer (1868)[6]


  1. ^ J. Houel (1863) "Essai d'une expositin rationelle des principes fondamentaux de la geometrie elementaire", Archiv der Mathematik und Physik 40: 171–211
  2. ^ J. Hoüel (1867) "Etudes geometriques sur la theorie des parallels", Mémoirs de la Société des Sciences Physiques et Naturalles de Bordeaux 4: 83–128, reprinted by Gauthier-Villars
  3. ^ J. Hoüel (1867) "La Science absolute de l'espace", Mémoirs de la Société des Sciences Physiques et Naturalles de Bordeaux 5: 189–248
  4. ^ J. Hoüel (1874) Éléments de la Théorie des Quaternions, Gauthier-Villars publisher, link from Google Books
  5. ^ P. G. Tait (1890) An Elementary Treatise on Quaternions, 3rd edition, p. vi, Cambridge University Press, link from Internet Archive
  6. ^ J. Hoüel (1876) "Principles fundamentaux de la Méthode de Quaternions", Bulletin ces Sciences Mathématiques et Astronomique 11: 113,4
  • G. B. Halsted (1897) Guillaume-Jules Hoüel, American Mathematical Monthly 4:99–101, link from Jstor early content.
  • O'Connor, John J.; Robertson, Edmund F., "Jules Hoüel", MacTutor History of Mathematics archive, University of St Andrews.
  • Jules Hoüel in libraries (WorldCat catalog)
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Jules Hoüel
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