.

From left to right: Michael Faraday, Thomas Henry Huxley, Charles Wheatstone, David Brewster, John Tyndall

Georg Friedrich Bernhard Riemann (1826-1866)

Marcel Grossmann (1878-1936), 1920.

Gregorio Ricci Curbastro (1853-1925)

Hermann Minkowski (1864 - 1909)

Henri Poincare

Aleksandr Alexandrowitsch Friedman (1888-1925)

Tullio Levi-Civita (1873-1941)

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Mathematician, Relativity