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-During the early years of his life the french revolution was going on and ended in 1799

IN RUSSIA.........

1801 Tsar Paul assassinated

1812 Mikhail Speransky exiled; Napoleon invades Russia

Napoleon occupies Kremlin; several walls and towers damaged by fires and explosions

1814 Alexander I enters Paris in triumph; reconstruction of Red Square begins under supervision of Osip Beauvais

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- Carl G. J. Jacobi (1804-1851) (Elliptic Theory)

- William Rowan (Sir) Hamilton (1805-1865)

(development of Quarternions)

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The Russian mathematician Nikolai Ivanovich Lobachevskii (1792-1856) was one of the first to found an internally consistent system of non-Euclidean geometry. His revolutionary ideas had profound implications for theoretical physics, especially the theory of relativity.

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https://play.kahoot.it/#/?quizId=2430ec9a-f48a-41dd-930d-de5bd14d8965

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Citations

"Greatest Mathematicians Born between 1800 and 1869 A.D." Greatest Mathematicians Born between 1800 and 1869 A.D. N.p., n.d. Web. 04 Jan. 2016.

Lobachevsky, Nicolai (1793-1856) -- from Eric Weisstein's World of Scientific Biography. N.d. Lobachevsky, Nicolai (1793-1856) -- from Eric Weisstein's World of Scientific Biography. Web. 15 Dec. 2015.

"Mathematical Ideas That Shaped the World Non-Euclidean Geometry."⚡Presentation "." N.p., n.d. Web. 04 Jan. 2016

"MBBS Colleges in Russia." Kazan State Medical University. N.p., n.d. Web. 16 Dec. 2015.

"Nikolai Ivanovich Lobachevskii." Encyclopedia of World Biography. 2004, ALEXANDER VUCINICH, and "Lobachevsky, Nikolai Ivanovich." The Columbia Encyclopedia, 6th Ed.. 2015. "Nikolai Ivanovich Lobachevskii."Encyclopedia.com. HighBeam Research, 01 Jan. 2004. Web. 04 Jan. 2016.

"Nikolay Ivanovich Lobachevsky". Encyclopædia Britannica. Encyclopædia Britannica Online.

Encyclopædia Britannica Inc., 2015. Web. 15 Dec. 2015

<http://www.britannica.com/biography/Nikolay-Ivanovich-Lobachevsky>.

"Nikolai+Lobachevsky+theory - Google Search."Nikolai+Lobachevsky+theory - Google Search. N.p., n.d. Web. 04 Jan. 2016.

Prodan, Olga. "Prominent Russians: Nikolai Lobachevsky." Nikolai Lobachevsky – Russiapedia Science and Technology Prominent Russians. N.p., n.d. Web. 15 Dec. 2015. <http://russiapedia.rt.com/prominent-russians/science-and-technology/nikolai-lobachevsky/>.

"non-Euclidean geometry". Encyclopædia Britannica. Encyclopædia Britannica Online.

Encyclopædia Britannica Inc., 2015. Web. 15 Dec. 2015

<http://www.britannica.com/topic/non-Euclidean-geometry>.

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Founder of non-Euclidean geometry

Non-Euclidean geometry

any geometry that is not the same as Euclidean geometry; term is freuqently used to refer only to hyperbolic geometry, common usage includes those few geometries (hyperbolic and spherical) that differ from but are very close to Euclidean geometry

any forms of geometry that contain a postulate (axiom) which is equivalent to the negation of the Euclidean parallel postulate.

Developed along two different historical threads

First thread started with the search to understand the movement of stars and planets in the apparently hemispherical sky

Second thread started with the fifth (“parallel”) postulate in Euclid’s Elements:

If a straight line falling on two straight lines makes the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, will meet on that side on which the angles are less than the two right angles

Called his work “imaginary geometry”

Lobachevsky obtained interesting results in algebra and analysis, such as the Lobachevsky–Gräffe method for computing the roots of a polynomial (1834) and the Lobachevsky criterion for convergence of an infinite series

His research interests also included the theory of probability, integral calculus, mechanics, astronomy, and meteorology.

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On December 1, 1793 Nikolai Lobachevsky was born in Nizhny Novgorod, Russia. Being the second of three boys Lobachevsky realized at an early age his gift for mathematics and with the help of his math teacher was able to extend his knowledge. he enrolled in The University of Kazan where he focused on natural sciences to focus on medicine. There, Lobachevsky was inspired by his professor, Martin Bartels; a highly accredited mathematician. In 1816, he began his 30 year career as a lecturer at the Kazan University, he ended up taking up the entire mathematics department at the university and helped go on its way to becoming one of the top academic institutions of the Russian Empire.