Théophile Pépin

Source: Wikipedia, the free encyclopedia.

Jean François Théophile Pépin (14 May 1826 – 3 April 1904) was a French mathematician.

Born in

Canon Law in 1873, moving to Rome in 1880. He died in Lyon
at the age of 77.

His work centred on

Frénicle de Bessy
's problem

x2 + y2 = z2,    x2 = u2 + v2,    xy = uv.

He also gave his name to Pépin's test, a test of primality for Fermat numbers.

References

  1. ^ Pepin T (1876). "Impossibilité de l'équation x7 + y7 + z7 = 0". C. R. Acad. Sci. Paris. 82: 676–679, 743–747.
  2. ^ Pepin T (1880). "Solution d'un Problème de Frenicle Sur Deux Triangles Rectangles". Atti Accad. Pont. Nuovi Lincei. 33: 284–289.

Bibliography

  • Franz Lemmermeyer. "A Note on Pépin's counter examples to the Hasse principle for curves of genus 1." Abh. Math. Sem. Hamburg 69 (1999), 335–345.