【预订】Homotopy Theory of Diagrams 9780821827598 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9780821827598 Author 作者 Wojciech Chacholski Format 版本 平装-胶订 Pages Number 页数 90页 Publisher 出版社 American Mathematical Society (AMS) Publication Date 出版日期 2002-01-04 Language 语种 英语 Book Contents 内容简介 In this paper we develop homotopy theoretical methods for studying diagrams. In particular we explain how to construct homotopy colimits and limits in an arbitrary model category. The key concept we introduce is that of a model approximation. A model approximation of a category \(\mathcal{C}\) with a given class of weak equivalences is a model category \(\mathcal{M}\) together with a pair of adjoint functors \(\mathcal{M} \rightleftarrows \mathcal{C}\) which satisfy certain properties. Our key result says that if \(\mathcal{C}\) admits a model approximation then so does the functor category \(Fun(I, \mathcal{C})\). From the homotopy theo
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