Algebra and Algebraic Geometry Seminar Fall 2021
The Virtual Seminar will take place on Fridays at 2:30 pm via Zoom. We will also link to relevant or interesting Zoom talks outside of the seminar.
Algebra and Algebraic Geometry Mailing List
- Please join the AGS mailing list by sending an email to firstname.lastname@example.org to hear about upcoming seminars, lunches, and other algebraic geometry events in the department (it is possible you must be on a math department computer to use this link).
As a result of Covid-19, the seminar for this semester will be a mix of virtual and in-person talks. The default Zoom link for the seminar is https://uwmadison.zoom.us/j/9502605167 (sometimes we will have to use a different meeting link, if Michael K cannot host that day).
Fall 2021 Schedule
|date||speaker||title||host/link to talk|
|September 24||Michael Kemeny (local)||The Rank of Syzygies|
|October 1||Michael K Brown (Auburn University)||Something about toric varieties, probably||Daniel|
|October 22||Ritvik Ramkumar (UC Berkeley)||Something about Hilbert schemes, probably||Daniel|
|November 5||Eric Ramos||Equivariant log-concavity|
Title: The Rank of Syzygies
Abstract: I will explain a notion of rank for the relations amongst the equations of a projective variety. This notion generalizes the classical notion of rank of a quadric and is just as interesting! I will spend most of the talk developing this notion but will also explain one result which tells us that, for a randomly chosen canonical curve, you expect all the linear syzygies to have the lowest possible rank. This is a sweeping generalization of old results of Andreotti-Mayer, Harris-Arbarello and Green, which tell us that canonical curves are defined by quadrics of rank four.