Dupin

Pierre Charles Francois Dupin

Born: 6 Oct 1784 in Varzy, France
Died: 18 Jan 1873 in Paris, France

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Dupin was educated at the École Polytechnique, where he learnt geometry from Monge, he became a naval engineer and was professor at Conservatoire des Arts et Métiers from 1819 until 1864. He made contributions to differential geometry and in particular invented the 'Dupin indicatrix' which gives an indication of the local behaviour of a surface up to the terms of degree two.

References:

  1. Dictionary of Scientific Biography
  2. J Bertrand, Pierre Charles Francois Dupin, Éloges académique (Paris, 1890), 221-246. 
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