◀ ▲ ▶History / 18thcentury / Person: Dupin, Pierre Charles François
Person: Dupin, Pierre Charles François
Charles Dupin made contributions to differential geometry and in particular invented the 'Dupin indicatrix'.
Mathematical Profile (Excerpt):
 Dupin was educated at the École Polytechnique in Paris, where he learnt geometry from Monge.
 While an undergraduate he made his famous discovery of what are called today 'Dupin's cyclides' guided in this work by Monge.
 It took him a while to recover from the illness, but Dupin was not idle while recovering in Pisa.
 Other contributions to differential geometry which occur in this work include his invention of the 'Dupin indicatrix' which gives an indication of the local behaviour of a surface up to the terms of degree two.
 The year 1813 saw Dupin elected to the Institut de France, the new organisation set up to replace the Académie des Sciences after the French Revolution.
 With the reestablishment of the Académie des Sciences, Dupin was elected to that body in 1818.
 Dupin was appointed professor at Conservatoire des Arts et Métiers in Paris in 1819.
 These lectures proved extremely popular, mainly since Dupin was an exceptional lecturer.
Born 6 October 1784, Varzy, France. Died 18 January 1873, Paris, France.
View full biography at MacTutor
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References
Adapted from other CC BYSA 4.0 Sources:
 O’Connor, John J; Robertson, Edmund F: MacTutor History of Mathematics Archive