Born in Italy, I first began studying mathematics at the University of Pavia.
Due to unexpected financial hardship, I had to discontinue my mathematical studies...yet was eventually appointed as a mathematics professor at the University of Bologna.
Though I made mathematical contributions in the areas of electricity and magnetism, I am remembered most for my work on nonEuclidean geometry.
In a 1868 essay, I proposed the first physical model of hyperbolic geometry, where straight lines are represented by geodesics on a "pseudosphere."
I was the first to prove the "equiconsistency" of hyperbolic and Euclidean geometry, by defining 2dimensional objects in a 3dimensional space, now known as the Klein model, the Poincaré disk model, and the Poincaré halfplane model.
Answer:
Eugenio Beltrami (1835  1900)
