The Real Projective Plane (Mixed media product, 3rd ed. 1993)

Along with many small improvements, this revised edition contains van Yzeren's new proof of Pascal's theorem (1.7) and, in Chapter 2, an improved treatment of order and sense. The Sylvester-Gallai theorem, instead of being introduced as a curiosity, is now used as an essential step in the theory of harmonic separation (3.34). This makes the logi cal development self-contained: the footnotes involving the References (pp. 214-216) are for comparison with earlier treatments, and to give credit where it is due, not to fill gaps in the argument. H.S.M.C. November 1992 v Preface to the Second Edition Why should one study the real plane? To this question, put by those who advocate the complex plane, or geometry over a general field, I would reply that the real plane is an easy first step. Most of the prop erties are closely analogous, and the real field has the advantage of intuitive accessibility. Moreover, real geometry is exactly what is needed for the projective approach to non* Euclidean geometry. Instead of introducing the affine and Euclidean metrics as in Chapters 8 and 9, we could just as well take the locus of 'points at infinity' to be a conic, or replace the absolute involution by an absolute polarity.

General

Imprint:	Springer-Verlag New York
Country of origin:	United States
Release date:	December 1992
First published:	1993
Appendix by:	G. Beck
Authors:	H.S.M. Coxeter
Dimensions:	234 x 156 x 26mm (L x W x T)
Format:	Mixed media product
Pages:	227
Edition:	3rd ed. 1993
ISBN-13:	978-0-387-97889-5
Categories:	Books > Science & Mathematics > Mathematics > Geometry > General
LSN:	0-387-97889-5
Barcode:	9780387978895

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