Summer Learning/Research Seminar

It is by now widespread knowledge that the McKay correspondence predicts that all crepant resolutions of a given singular variety have equivalent derived categories of coherent sheaves. Interestingly, this viewpoint doesn't appear in the original paper by McKay at all. This talk will be an introduction to the actual McKay correspondence, which doesn't feature derived categories, but rather finite subgroups of SO(3) or SU(2) and extended Dynkin diagrams of type ADE.

Organizers' note: This is the first talk of a research/learning seminar we are organizing this summer. The goal of this seminar is to provide a place for algebra-oriented (broadly including algebraic geometry, number theory, representation theory and algebraic topology) grad students and postdocs to discuss mathematics over the summer, although we very much welcome faculty participation as well. If you are interested in participating in this seminar in any form, please take a look at our seminar website: https://sites.google.com/view/agseminar/summer-2026.

This will likely be the last public seminar announcement. Going forward, we will mainly be sending out announcements through our own mailing list, so if you would like to stay updated, please send the organizers an email to be added to the mailing list.