
Non-Euclidean Geometry
The name non-Euclidean was used by Gauss to describe a system of geometry which differs from Euclid''s in its properties of parallelism. Such a system was developed independently by Bolyai in Hungary and Lobatschewsky in Russia, about 120 years ago. Another system, differing more radically from Euclid''s, was suggested later by Riemann in Germany and Cayley in England. The subject was unified in 1...
The name non-Euclidean was used by Gauss to describe a system of geometry which differs from Euclid''s in its properties of parallelism. Such a system was developed independently by Bolyai in Hungary and Lobatschewsky in Russia, about 120 years ago. Another system, differing more radically from Euclid''s, was suggested later by Riemann in Germany and Cayley in England. The subject was unified in 1...