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Pierre Dupin, French Mathematician

Pierre Charles Francois Dupin (October 6, 1784 - January 18, 1873) was a French Catholic mathematician. He studied geometry with Monge at the École Polytechnique and then became a naval engineer. In 1826 he published a thematic map showing the distribution of illiteracy in France, using shadings (from black to white), the first known instance of what is called a choropleth map today. His mathematical work was in descriptive and differential geometry. He was the discoverer of conjugate tangents to a point on a surface and of the Dupin indicatrix. He died in 1873 at the age of 88.
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Title:
Pierre Dupin, French Mathematician
Caption:
Pierre Charles Francois Dupin (October 6, 1784 - January 18, 1873) was a French Catholic mathematician. He studied geometry with Monge at the École Polytechnique and then became a naval engineer. In 1826 he published a thematic map showing the distribution of illiteracy in France, using shadings (from black to white), the first known instance of what is called a choropleth map today. His mathematical work was in descriptive and differential geometry. He was the discoverer of conjugate tangents to a point on a surface and of the Dupin indicatrix. He died in 1873 at the age of 88.
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Credit:
Album / Science Source / Smithsonian Institution Libraries
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Image size:
3300 x 4456 px | 42.1 MB
Print size:
27.9 x 37.7 cm | 11.0 x 14.9 in (300 dpi)
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