Venue   University of California at Riverside, 15 January 2020 Abstract   This talk is about a canonical categorical construction: the codensity monad of a functor. When applied to some familiar functors, it produces concepts such as these: prime ideals and fields of fractions the radical of an integer ultrafilters and ultraproducts compact Hausdorff spaces and sheaves on them double dualization of vector spaces linearly compact vector spaces probability measures … I will explain. Slides   In this pdf file. See the last page for references and further reading.   This page was last changed on 15 January 2020. Home