{"product_id":"sheaf-theory-book-glen-e-bredon-9781461268543","title":"Sheaf Theory","description":"This book is primarily concerned with the study of cohomology theories of general topological spaces with general coefficient systems.  Sheaves play several roles in this study. For example, they provide a suitable notion of general coefficient systems.  Moreover, they furnish us with a common method of defining various cohomology theories and of comparison between different cohomology theories. The parts of the theory of sheaves covered here are those areas impor- tant to algebraic topology. Sheaf theory is also important in other fields of mathematics, notably algebraic geometry, but that is outside the scope of the present book. Thus a more descriptive title for this book might have been Algebraic Topology from the Point of View of Sheaf Theory. Several innovations will be found in this book. Notably, the con- cept of the tautness of a subspace (an adaptation of an analogous no- tion of Spanier to sheaf-theoretic cohomology) is introduced and exploited throughout the book. The fact that sheaf-theoretic cohomology satisfies 1 the homotopy property is proved for general topological spaces. Also, relative cohomology is introduced into sheaf theory. Concerning relative cohomology, it should be noted that sheaf-theoretic cohomology is usually considered as a single space theory.","brand":"WoB","offers":[{"title":"- \/ - \/ INTERNAL","offer_id":52661702164753,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true},{"title":"GB \/ NEW \/ INGRAM","offer_id":52661703180561,"sku":"NLS9781461268543","price":85.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9781461268543.jpg?v=1762267859","url":"https:\/\/www.worldofbooks.com\/products\/sheaf-theory-book-glen-e-bredon-9781461268543","provider":"World of Books ","version":"1.0","type":"link"}