Definitions
from Wiktionary, Creative Commons Attribution/ShareAlike License
 adj. Of or pertaining to Nikolai Ivanovich Lobachevsky (1792–1856), Russian mathematician, or to his work, most notably on nonEuclidean geometry.
Etymologies
from Wiktionary, Creative Commons Attribution/ShareAlike License
Examples

For this reason, hyperbolic geometry is sometimes called Lobachevskian geometry.

Since Lobachevsky was the first to publish, the system of geometry based on the said "absolute geometry" plus the negation of Euclid's Postulate is properly called Lobachevskian geometry.

Helmholtz investigates the question of which systems of geometry (Euclidean, Lobachevskian, and Riemannian) are possible under which assumptions.

In April 1869, Eugenio Beltrami pointed out in a letter to Helmholtz that Lobachevskian geometry could be adequate to the task under the assumption that we live in a

In other words, every theorem of Lobachevskian geometry holds for suitable figures formed from points of Int (Îº), if the distance between any two of these points is given by the function dÎº.

Hence, in Lobachevskian geometry, similar triangles are congruent.

Thus, in Lobachevskian geometry there are no rectangles.

Lobachevskian geometry received little attention before the late

There is a simple formal correspondence between the equations of Lobachevskian trigonometry and those of standard spherical trigonometry.

I would walk in time with the way toward that Lobachevskian haze up ahead where the two rails meet.
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