Introduction to Hyperbolic Geometry

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Springer Science & Business Media, Dec 16, 1995 - Mathematics - 289 pages
This book is an introduction to hyperbolic and differential geometry that provides material in the early chapters that can serve as a textbook for a standard upper division course on hyperbolic geometry. For that material, the students need to be familiar with calculus and linear algebra and willing to accept one advanced theorem from analysis without proof. The book goes well beyond the standard course in later chapters, and there is enough material for an honors course, or for supplementary reading. Indeed, parts of the book have been used for both kinds of courses. Even some of what is in the early chapters would surely not be nec essary for a standard course. For example, detailed proofs are given of the Jordan Curve Theorem for Polygons and of the decomposability of poly gons into triangles, These proofs are included for the sake of completeness, but the results themselves are so believable that most students should skip the proofs on a first reading. The axioms used are modern in character and more "user friendly" than the traditional ones. The familiar real number system is used as an in gredient rather than appearing as a result of the axioms. However, it should not be thought that the geometric treatment is in terms of models: this is an axiomatic approach that is just more convenient than the traditional ones.
 

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Contents

Introduction
1
Axioms for Plane Geometry
9
Some Neutral Theorems of Plane Geometry
30
Qualitative Description of the Hyperbolic Plane
69
H3 and Euclidean Approximations in H2
130
Differential Geometry of Surfaces
153
Quantitative Considerations
194
Consistency and Categoricalness of the Hyperbolic Axioms The Classical Models
206
Matrix Representation of the Isometry Group
222
Differential and Hyperbolic Geometry in More Dimensions
236
Connections with the Lorentz Group of Special Relativity
246
Constructions by Straightedge and Compass in the Hyperbolic Plane
258
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