Dupin, François Pierre Charles

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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Dupin, François Pierre Charles


Born Oct. 6, 1784, in Varzy, Niévre; died Jan. 18, 1873, in Paris. French geometrician and economist; member of the Academy of Sciences of Paris (1818).

Dupin was trained as a naval engineer. His works are in the field of differential geometry. In one of his theorems (Dupin’s theorem), he proves that planes in an orthogonal system intersect along general lines of curvature; Dupin’s indicatrix (or characteristic curve) permits a visual representation of the degree of curvature of a surface in its various normal sections. In economics, Dupin was a protectionist.


Développement de géométrie pourfaire suite à la géométrie pratique de Monge. Paris, 1813.
Application de géométrie et de mécanique à la marine, aux ponts et chaussées. Paris, 1822.


Stroik, D. Ia. Kratkii ocherk istorii matematiki, 2nd ed. Moscow, 1969. (Translated from German.)
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.