Méray

Hugues Charles Robert Méray

Born: 12 Nov 1835 in Chalon-sur-Saône, France
Died: 2 Feb 1911 in Dijon, France

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Charles Méray lectured at Lyon for a year and then Dijon for the rest of his career, following a seven year retiral after first graduating.

In 1869 he was the first to publish an arithmetical theory of irrational numbers, the work not being influenced by Weierstrass (whose work was unpublished) or Dedekind who only published his theories after Cantor's important paper appeared in 1872. Méray followed Lagrange's earlier work but gave rigorous proofs of what Lagrange had only conjectured.

References:

  1. Dictionary of Scientific Biography
  2. J Molk, Nombres irrationels et la notion de limite, Encyclopédie des sciences mathématique pure et appliquées I (Paris, 1904), 133-160. 
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JOC/EFR February 1996