Geometry: Plane and FancySpringer Science & Business Media, 6 Δεκ 2012 - 162 σελίδες GEOMETRY: Plane and Fancy offers students a fascinating tour through parts of geometry they are unlikely to see in the rest of their studies while, at the same time, anchoring their excursions to the well known parallel postulate of Euclid. The author shows how alternatives to Euclid's fifth postulate lead to interesting and different patterns and symmetries. In the process of examining geometric objects, the author incorporates the algebra of complex (and hypercomplex) numbers, some graph theory, and some topology. Nevertheless, the book has only mild prerequisites. Readers are assumed to have had a course in Euclidean geometry (including some analytic geometry and some algebra) at the high school level. While many concepts introduced are advanced, the mathematical techniques are not. Singer's lively exposition and off-beat approach will greatly appeal both to students and mathematicians. Interesting problems are nicely scattered throughout the text. The contents of the book can be covered in a one-semester course, perhaps as a sequel to a Euclidean geometry course. |
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Σελίδα vii
... rotations of the sphere about different axes . Along the way , some of the basic ideas of algebra show up . The third section describes the notion of curvature for polyhedra and includes a proof of the polyhedral Gauss - Bonnet theorem ...
... rotations of the sphere about different axes . Along the way , some of the basic ideas of algebra show up . The third section describes the notion of curvature for polyhedra and includes a proof of the polyhedral Gauss - Bonnet theorem ...
Σελίδα ix
... Rotating the Sphere 105 113 5.3 Curvature of Polyhedra and the Gauss - Bonnet Theorem 121 Chapter 6 Geometry of Space 131 6.1 A Hint of Riemannian Geometry 131 6.2 What Is Curvature ? 141 6.3 From Euclid to Einstein 146 References 155 1 ...
... Rotating the Sphere 105 113 5.3 Curvature of Polyhedra and the Gauss - Bonnet Theorem 121 Chapter 6 Geometry of Space 131 6.1 A Hint of Riemannian Geometry 131 6.2 What Is Curvature ? 141 6.3 From Euclid to Einstein 146 References 155 1 ...
Σελίδα 15
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Σελίδα 23
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Σελίδα 24
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Περιεχόμενα
1 | |
Tiling the Plane with Regular Polygons | 21 |
Geometry of the Hyperbolic Plane | 48 |
Geometry of the Sphere | 74 |
More Geometry of the Sphere | 105 |
Geometry of Space | 131 |
References | 155 |
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A₁ Algebra angle sum antipodal points assume assumption axioms called Chapter closed curve color commutative law complex numbers compute congruent conjugate Möbius transformation construct convex corresponding cube defect defined described disc divide edge elliptic geometry equal equation Euclid Euclidean geometry Euler's theorem exactly example exterior angles fact fifth postulate flip formula geodesic geometric object graph h-lines hexagon hyperbolic geometry hyperbolic plane ideal point intersect inverse isometry Koch snowflake lemma length line segment Mathematics Möbius band Möbius transformation move origin orthogonal pair of antipodal parallel postulate pattern pentagons perpendicular polyhedra polyhedral surface polyhedron possible Problem projective plane proof Proposition prove quaternions radius real number rectangle regular polygons right angles rotation Schlegel diagram semiregular tilings shortest path side smaller snowflake space spherical straight line Suppose symmetry tangent tessellation translation triangle ABC unit circle vector vertex vertices