biography
pronunciation:
[shahl]
| sex:
| male
|
| lived:
| (1793–1880)
|
| biography:
| Mathematician, born in Epernon, NC France. He entered the Ecole Polytechnique in 1812, and became a military engineer, but resigned to devote himself to mathematics, becoming professor of geometry at the Sorbonne in 1846. He greatly developed synthetic projective geometry by means of cross-ratio and homographies without the use of co-ordinates. |
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