1994 | OriginalPaper | Chapter
Grothendieck Topologies and Sheaves
Authors : Saunders Mac Lane, Ieke Moerdijk
Published in: Sheaves in Geometry and Logic
Publisher: Springer New York
Included in: Professional Book Archive
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The notion of a sheaf, presented as in Chapter II in terms of coverings, restrictions, and collation, can be defined and used (e.g., for cohomology) not just on the usual topological spaces but also on more general “topologies”. This section is meant to provide some informal background and motivation for the development of these general topological ideas.