Michael Baker, Pure Mathematics, University of Waterloo
"A motivated introduction to sheaves"
Sheaves are structures that keep track of local information attached to the open sets of a topological space. They also appear in the definition of a scheme. After discussing a few familiar examples, the concepts of presheaf and sheaf will be defined, along with the appropriate notion of morphism between such objects. If time permits, stalks and sheafification will be discussed.