On the Principles of Geometry

E838599

"On the Principles of Geometry" is Nikolai Lobachevsky’s foundational work that introduced non-Euclidean (hyperbolic) geometry, challenging the universality of Euclid’s parallel postulate.

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instanceOf mathematics book
scientific work
treatise
author Nikolai Lobachevsky NERFINISHED
authorNationality Russian
authorOccupation mathematician
contribution demonstrated consistency of a geometry where multiple parallels through a point exist
introduced new trigonometric relations in hyperbolic geometry
provided alternative axioms to Euclidean geometry
showed that the sum of angles in a triangle can be less than 180 degrees
countryOfOrigin Russian Empire
field geometry
hyperbolic geometry
non-Euclidean geometry
genre academic monograph
hasKeyConcept geometric consistency independent of Euclid’s fifth postulate
models of hyperbolic space
parallel lines diverging
historicalPeriod 19th century
impact contributed to the eventual acceptance of multiple geometries in mathematics
helped establish non-Euclidean geometry as a legitimate branch of mathematics
influenced differential geometry
foundations of mathematics
theory of relativity
influencedBy Euclid’s Elements NERFINISHED
classical Euclidean geometry
language Russian
mainSubject Euclid’s parallel postulate NERFINISHED
angle sum of a triangle
foundations of geometry
geometric axioms
hyperbolic plane
parallel lines
notableFor challenging the universality of Euclid’s parallel postulate
introducing non-Euclidean geometry
systematic development of hyperbolic geometry
relatedConcept Lobachevskian geometry NERFINISHED
curvature of space
hyperbolic trigonometry
relatedWork Elements NERFINISHED
Foundations of Geometry NERFINISHED
topic axiomatic method in geometry
logical structure of geometric theories

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Nikolai Lobachevsky notableWork On the Principles of Geometry