TY  - BOOK
AU  - Bonola, Roberto.
TI  - Non-Euclidian geometry : : A critical and Historical Study of its developments
PY  - 1955///
CY  - /New York/ : 
PB  - Dover Publications, 
KW  - GEOMETRIA NO EUCLIDIANA
KW  - DIRECCION PROYECTIVA
KW  - PARALELAS NO EUCLIDEANAS
N1  - The attempts to prove Euclid's postulate;The Forerunners of non-euclidean geometry;The founders of non-euclidean geometry;The later development of non-euclidean geometry;The fundamentals principles of statics and Euclid's postulate;Clifford's parallels and surface. Sketch of Clifford-Klein's problems;The non-euclidean parallel construction and other allied constructions;The independence of projective geomtry from Euclid's postulate;The impossibility of proving Euclid's postulate;The science of absolute space por John Bolyai;The theory of parallels por Nicholas Lobachevski
ER  -