Charles Dupin
French mathematician, engineer, economist and politician (1784-1873) · France · On the map · Academics · Died at 88
Baron Pierre Charles François Dupin was a French Catholic mathematician, engineer, economist and politician, particularly known for work in the field of mathematics, where the Dupin cyclide and Dupin indicatrix are named after him; and for his work in the field of statistical and thematic mapping.
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In 1826 he created the earliest known choropleth map.
