Dopamine 发表于 2025-3-21 18:50:11
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Undergraduate Texts in Mathematicshttp://image.papertrans.cn/j/image/501137.jpgATP861 发表于 2025-3-22 07:18:59
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978-1-4613-9440-2Springer-Verlag New York Inc. 1979Jingoism 发表于 2025-3-22 15:19:59
Join Geometries978-1-4613-9438-9Series ISSN 0172-6056 Series E-ISSN 2197-5604Aerate 发表于 2025-3-22 19:34:18
Rays and Halfspaces, the concepts taken up is that of opposite rays which is suggested by the idea of opposite directions from a point. Secondly the notion of ray is generalized to that of halfspace. Then half spaces which have a common bounding linear space or edge are studied in a treatment that parallels that given for rays.Albumin 发表于 2025-3-22 22:13:31
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The Operation of Extension,involving extension are introduced to complete the basic postulate set. These are employed to derive principles and formulas involving extension and join which supplement and enrich the formal theory of join in Chapters 2 and 3. The theory is applied to new ideas: extreme points of convex sets, line彩色 发表于 2025-3-23 07:36:29
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