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The Elements of Non-Euclidean Geometry (Dover Books on Mathematics)
The Elements of NonEuclidean Geometry - Dover Books on Mathematics Author:D. M.Y. Sommerville Renowned for its lucid yet meticulous exposition, this text follows the development of non-Euclidean geometry from a fundamental analysis of the concept of parallelism to such advanced topics as inversion and transformations. It features the relation between parataxy and parallelism, the absolute measure, the pseudosphere, and Gauss' proof of t... more »he defect-area theorem. 1914 edition. Includes 133 figures.« less