Bobillier

Étienne Bobillier

Born: 17 April 1798 in Lons-le-Saulnier, France
Died: 22 March 1840 in Châlons-sur-Marne, France

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Étienne Bobillier corresponded with Poncelet and worked on geometric problems. He was the first to use z -> 1/z in the study of conic sections. Bobillier is best known for his work on polars of curves of algebraic surfaces. He also worked on statics and studied the catenary.

References:

  1. Dictionary of Scientific Biography
  2. Obituary of Étienne Bobillier, Almanach du départment de la Marne (1841), 316-320. 
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JOC/EFR February 1996