When1: 1639
Who: Girard Desargues [Desargues, Girard]
What: mathematician
Where: France
works\ Rough draft for an essay on the results of taking plane sections of a cone [1639]
Detail: He lived 1591 to 1661, invented Desargue's theorem, and studied projective geometry, involution, harmonic point sets, and poles and polar theory.
Mathematical Sciences>Mathematics>History>Geometry
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Date Modified: 2022.0224