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Non-Euclidean geometry
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Summary Of: Non-Euclidean

The essential difference between Euclidean and non-Euclidean geometry is the nature of... Non-Euclidean geometry systems differ from Euclidean geometry in that they modify Euclid... Non-Euclidean geometries and in particular elliptic geometry play an important role in relativity theory and the... The concepts applied to certain non-Euclidean planes can only be shown in three dimensions... non-Euclidean geometries were not widely accepted as legitimate until the 19th century... debate that eventually led to the discovery of non-Euclidean geometries began almost as soon as Euclid... these early attempts made at trying to formulate non-Euclidean geometry however provided flawed proofs of the parallel postulate... presented one of the earliest arguments for a non-Euclidean hypothesis equivalent to the parallel postulate... While Lobachevsky created a non-Euclidean geometry by negating the parallel postulate... Lobachevsky published his first paper on the non-Euclidean geometry in 1829... and through this work the ideas of the non-Euclidean geometry came step by step to the mathematical community... manuscripts only the very starting points of the non-Euclidean geometry can be found... written evidence that Gauss had worked out the non-Euclidean geometry to an extent comparable to the works of Bolyai and Lobachevsky... He constructed an infinite family of non-Euclidean geometries by giving a formula for a family of Riemannian metrics on the unit ball... The development of non-Euclidean geometries proved very important to physics in the 20th century... serves to elucidate the non-Euclidean nature of spacetime... Non-Euclidean geometry often makes appearances in works of... portraying non-Euclidean geometry as a stark... fiction stories refer to phenomena as non-Euclidean to minds using Euclidean geometry as an approximating schema...

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| | hyperbolic | elliptic geometry | Euclidean geometry | parallel | Euclid | parallel postulate | Playfair's postulate | infinitely | hyperbolic geometry | elliptic geometry | perpendicular | distance | parallel postulate | hyperbolic geometry | elliptic geometry | elliptic geometry | spacetime | Mobius strip | Klein bottle | Euclidean geometry | Greek mathematician | Euclid | Elements | propositions | parallel postulate | parallel postulate | equivalent | geometers | proof by contradiction | Arabic mathematician | Ibn al-Haytham | Persian | Omar Khayyám | Nasīr al-Dīn al-Tūsī | Italian | Giovanni Girolamo Saccheri | quadrilaterals | Lambert quadrilateral | Saccheri quadrilateral | hyperbolic | elliptic geometries | Playfair's axiom | Witelo | Levi ben Gerson | Alfonso | John Wallis | Aristotle | Rome | Giordano Vitale | Hungarian | János Bolyai | Russian | Nikolai Ivanovich Lobachevsky | Carl Friedrich Gauss | János Bolyai | Bernhard Riemann | Riemannian geometry | manifolds | Riemannian metric | curvature | Euclidean space | elliptic geometry | | | Models of non-Euclidean geometry | modelled | plane | elliptic geometry | great circles | equator | meridians | globe | hyperbolic geometry | hyperbolic geometry | Eugenio Beltrami | pseudosphere | curvature | hyperbolic space | Klein model | Poincaré disk model | Poincaré half-plane model | equiconsistent | logically consistent | horosphere | infinitely | Dehn plane | surreal numbers | speed of light | hyperbolic geometry | synthetic geometry | Einstein | general relativity | Hubble constant | Riemannian geometry | science fiction | fantasy | horror fiction | H. P. Lovecraft | time dilation | Affine geometry | Projective geometry | Spherical geometry | Taxicab geometry | Hyperbolic geometry | Hyperbolic space | Elliptic geometry | Absolute geometry | Ordered geometry | Riemannian geometry | Parallel postulate | Schopenhauer's criticism of the proofs of the Parallel Postulate | Rutgers University | Encyclopedia of the History of Arabic Science | Routledge | Witelo | Ibn al-Haytham | Book of Optics | Levi ben Gerson | Saccheri | Encyclopedia of the History of Arabic Science | Routledge | ISBN 0415124115 | Addison-Wesley | ISBN 0321016181 | Encyclopedia of the History of Arabic Science | Routledge | ISBN 0716799480 | Stewart, Ian | Flatterland | ISBN 0-7382-0675-X | PlanetMath | Categories | Geometry | Non-Euclidean geometry | Hyperbolic geometry |
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