Tullio Levi-Civita (March 29, 1873 - December 29, 1941) (pronounced le-vee chee-vee-tah) was an Italian mathematician, most famous for his work on absolute differential calculus (tensor calculus) and its applications to the theory of relativity but who also made significant contributions in other areas. He was a pupil of Gregorio Ricci-Curbastro, the inventor of tensor calculus. His work included foundational papers in both pure and applied mathematics, … Wikipedia
... Nationality Italian Levi-Civita, Tullio (1873-1941) Italian mathematician who, with Ricci-Curbastro , founded tensor calculus . He also studied the restricted three-body problem... scienceworld.wolfram.com/biography/Levi-Civita.html
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