Lobachevski

[ lō′bə-chĕf′skē ]

Nikolai Ivanovich 1792-1856

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Russian mathematician who was a pioneer of non-Euclidean geometry.

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Words nearby Lobachevski

Lobachevski has proved not, by creating non-Euclidean geometry.
The Foundations of Science: Science and Hypothesis, The Value of Science, Science and Method|Henri Poincar
There is a sort of opposition between Riemann's geometry and that of Lobachevski.
The Foundations of Science: Science and Hypothesis, The Value of Science, Science and Method|Henri Poincar
Thus, however far the consequences of Lobachevski's hypotheses are pushed, they will never lead to a contradiction.
The Foundations of Science: Science and Hypothesis, The Value of Science, Science and Method|Henri Poincar
The two-dimensional geometries of Riemann and Lobachevski are thus correlated to the Euclidean geometry.
The Foundations of Science: Science and Hypothesis, The Value of Science, Science and Method|Henri Poincar

Beltrami has shown that the geometry of these surfaces is none other than that of Lobachevski.
The Foundations of Science: Science and Hypothesis, The Value of Science, Science and Method|Henri Poincar