Alexis de Tocqueville
18051859
Penseur, historien, diplomate français analysant la démocratie, notamment dans *De la démocratie en Amérique*
17691859
Prussian geographer, naturalist, and explorer who co-founded modern geography and pioneered biogeography and geophysical measurement
18051859
German mathematician who pioneered analytic number theory, advanced Fourier series, and provided the modern definition of a function