Category:Definitions/Named Definitions/Beltrami
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This category contains definitions named for Eugenio Beltrami.
Italian mathematician notable for his work concerning differential geometry and mathematical physics.
The first to prove consistency of non-Euclidean geometry by modeling it on a surface of constant curvature, the pseudosphere, and in the interior of an $n$-dimensional unit sphere.
Developed singular value decomposition for matrices, which has been subsequently rediscovered several times.
His use of differential calculus for problems of mathematical physics indirectly influenced development of tensor calculus by Gregorio Ricci-Curbastro and Tullio Levi-Civita.
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