Geometries and TransformationsCambridge University Press, 2018年6月7日 Euclidean and other geometries are distinguished by the transformations that preserve their essential properties. Using linear algebra and transformation groups, this book provides a readable exposition of how these classical geometries are both differentiated and connected. Following Cayley and Klein, the book builds on projective and inversive geometry to construct 'linear' and 'circular' geometries, including classical real metric spaces like Euclidean, hyperbolic, elliptic, and spherical, as well as their unitary counterparts. The first part of the book deals with the foundations and general properties of the various kinds of geometries. The latter part studies discrete-geometric structures and their symmetries in various spaces. Written for graduate students, the book includes numerous exercises and covers both classical results and new research in the field. An understanding of analytic geometry, linear algebra, and elementary group theory is assumed. |
搜尋書籍內容
第 6 到 10 筆結果,共 92 筆
第 3 頁
... sphere (or simply “the sphere”), points come in antipodal pairs, and the role of lines is played by great circles; any two nonantipodal points lie on a unique great circle, and any two great circles meet in a pair of antipodal points ...
... sphere (or simply “the sphere”), points come in antipodal pairs, and the role of lines is played by great circles; any two nonantipodal points lie on a unique great circle, and any two great circles meet in a pair of antipodal points ...
第 12 頁
... sphere I 2 can be modeled by the complex projective line, with circle-preserving “homographies” of I2 corresponding to linear fractional transformations of C∪ {∞}. Besides the mostly continuous groups of transformations of whole ...
... sphere I 2 can be modeled by the complex projective line, with circle-preserving “homographies” of I2 corresponding to linear fractional transformations of C∪ {∞}. Besides the mostly continuous groups of transformations of whole ...
第 14 頁
... sphere Sk—a pair of points if k = 0, a circle if k = 1, a sphere if k = 2, a hypersphere if k = n − 1. The points of Sn occur in antipodal pairs; a k-sphere in Sn that contains such a pair is a great k-sphere, a k-dimensional subspace ...
... sphere Sk—a pair of points if k = 0, a circle if k = 1, a sphere if k = 2, a hypersphere if k = n − 1. The points of Sn occur in antipodal pairs; a k-sphere in Sn that contains such a pair is a great k-sphere, a k-dimensional subspace ...
第 15 頁
... sphere whose radius increases without bound becomes Euclidean in the limit (Stäckel 1901; cf. Bonola 1906, §30; Sommerville 1914, p. 15;. Figure 1.1a Great circles in S2 Figure 1.1c Parallel lines in H2 Figure 1.1e Ordinary, absolute ...
... sphere whose radius increases without bound becomes Euclidean in the limit (Stäckel 1901; cf. Bonola 1906, §30; Sommerville 1914, p. 15;. Figure 1.1a Great circles in S2 Figure 1.1c Parallel lines in H2 Figure 1.1e Ordinary, absolute ...
第 16 頁
... sphere Sk (k < n) is a k-plane Ek, while in hyperbolic n-space it is a k-horosphere, isometric to Euclidean k-space. Hyperbolic k-space can be embedded in hyperbolic n-space (k < n) not only as a k-plane Hk but also as one of the two ...
... sphere Sk (k < n) is a k-plane Ek, while in hyperbolic n-space it is a k-horosphere, isometric to Euclidean k-space. Hyperbolic k-space can be embedded in hyperbolic n-space (k < n) not only as a k-plane Hk but also as one of the two ...
內容
1 | |
13 | |
27 | |
Circular Geometries | 57 |
Real Collineation Groups | 87 |
Equiareal Collineations | 113 |
Real Isometry Groups | 138 |
Complex Spaces | 157 |
Complex Collineation Groups | 168 |
Circularities and Concatenations | 183 |
Unitary Isometry Groups | 203 |
Finite Symmetry Groups | 223 |
Tables | 390 |
List of Symbols | 406 |
Index | 425 |
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常見字詞
affine angle associated Axiom called central circle collineation column commutator complex contains coordinates corresponding Coxeter diagrams Coxeter group defined determinant direct distance dual elements elliptic entries equal Euclidean EXERCISES expressed extended field Figure Find finite fixed follows four fractional transformations fundamental region geometry given half-turn honeycomb hyperbolic hyperplane hypersphere induces infinite integers inversive isometry isomorphic lattice length linear group mapping matrix meet multiplication n-space nonzero normal obtain operation ordinary orthogonal orthogonal matrix pairs parallel period plane points polarity positive preserves projective properties quaternionic ratios reffections regular represented respective ring rotation satisfying the relations scalar separated Show sides similarity space sphere spherical subgroup of index symbol symmetry group symplectic taking tions transformation translation triangle unique unit unitary vector vector space vertices