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Join Geometries : A Theory of Convex Sets and Linear Geometry / by W. Prenowitz, J. Jantosciak
(Undergraduate Texts in Mathematics. ISSN:21975604)
版 | 1st ed. 1979. |
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出版者 | New York, NY : Springer New York : Imprint: Springer |
出版年 | 1979 |
本文言語 | 英語 |
大きさ | 534 p : online resource |
著者標目 | *Prenowitz, W author Jantosciak, J author SpringerLink (Online service) |
件 名 | LCSH:Convex geometry LCSH:Discrete geometry FREE:Convex and Discrete Geometry |
一般注記 | 1 The Join and Extension Operations in Euclidean Geometry -- 2 The Abstract Theory of Join Operations -- 3 The Generation of Convex Sets—Convex Hulls -- 4 The Operation of Extension -- 5 Join Geometries -- 6 Linear Sets -- 7 Extremal Structure of Convex Sets: Components and Faces -- 8 Rays and Halfspaces -- 9 Cones and Hypercones -- 10 Factor Geometries and Congruence Relations -- 11 Exchange Join Geometries—The Theory of Incidence and Dimension -- 12 Ordered Join Geometries -- 13 The Structure of Polytopes in an Ordered Geometry -- References The main object of this book is to reorient and revitalize classical geometry in a way that will bring it closer to the mainstream of contemporary mathematics. The postulational basis of the subject will be radically revised in order to construct a broad-scale and conceptually unified treatment. The familiar figures of classical geometry-points, segments, lines, planes, triangles, circles, and so on-stem from problems in the physical world and seem to be conceptually unrelated. However, a natural setting for their study is provided by the concept of convex set, which is compara tively new in the history of geometrical ideas. The familiarfigures can then appear as convex sets, boundaries of convex sets, or finite unions of convex sets. Moreover, two basic types of figure in linear geometry are special cases of convex set: linear space (point, line, and plane) and halfspace (ray, halfplane, and halfspace). Therefore we choose convex set to be the central type of figure in our treatment of geometry. How can the wealth of geometric knowledge be organized around this idea? By defini tion, a set is convex if it contains the segment joining each pair of its points; that is, if it is closed under the operation of joining two points to form a segment. But this is precisely the basic operation in Euclid HTTP:URL=https://doi.org/10.1007/978-1-4613-9438-9 |
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電子ブック | オンライン | 電子ブック |
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Springer eBooks | 9781461394389 |
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EB00233833 |
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データ種別 | 電子ブック |
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分 類 | LCC:QA639.5-640.7 LCC:QA640.7-640.77 DC23:516 |
書誌ID | 4000106258 |
ISBN | 9781461394389 |
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