• Title The Elements of Non-Euclidean Geometry
• Author(s) Julian Lowell Coolidge
• Publisher: Palala Press (November 17, 2015); eBook (Project Gutenberg Edition)
• License(s): The Project Gutenberg License
• Paperback 292 pages
• eBook PDF (282 pages, 1.2MB) and TeX
• Language: English
• ISBN-10: 1346669430
• ISBN-13: 978-1346669434
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Book Description

The heroic age of non-euclidean geometry is passed. It is long since the days when Lobatchewsky timidly referred to his system as an 'imaginary geometry', and the new subject appeared as a dangerous lapse from the orthodox doctrine of Euclid.

The attempt to prove the parallel axiom by means of the other usual assumptions is now seldom undertaken, and those who do undertake it, are considered in the class with circle-squarers and searchers for perpetual motion– sad by-products of the creative activity of modern science.

In this, as in all other changes, there is subject both for rejoicing and regret. It is a satisfaction to a writer on non-euclidean geometry that he may proceed at once to his subject, without feeling any need to justify himself, or, at least, any more need than any other who adds to our supply of books.

Topics include elementary hyperbolic geometry; elliptic geometry; analytic non-Euclidean geometry; representations of non-Euclidean geometry in Euclidean space; and space curvature and the philosophical implications of non-Euclidean geometry.

• Julian Lowell Coolidge was an American mathematician, historian and a professor and chairman of the Harvard University Mathematics Department.

• Amazon
• Amazon (Standard Textbook)

• Geometry and Topology
• Mathematical Logic - Computability, Set Theory, Model Theory, Proof Theory, etc.
• Applied Mathematics

• The Elements of Non-Euclidean Geometry (Julian L. Coolidge)

• Euclidean Plane and its Relatives: A Minimalist Introduction
• Euclid and His Twentieth Century Rivals (Nathaniel Miller)
• Elementary College Geometry (Henry Africk)