Algebra and Algebraic Geometry Seminar Spring 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 ags+join@g-groups.wisc.edu 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).

COVID-19 Update

As a result of Covid-19, the seminar for this semester will be held virtually. 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).

Spring 2021 Schedule

date	speaker	title	link to talk
January 29	Nir Avni (Northwestern)	First order rigidity for higher rank lattices	Zoom link
February 12	Marian Aprodu (Bucharest)	TBA	Zoom link
February 19	Dhruv Ranganathan (Cambridge)	Logarithmic Donaldson-Thomas theory	Zoom link
February 26	Philip Engel (UGA)	TBA	Zoom link
March 12	Michael Groechenig (University of Toronto)	TBA	Zoom link
April 16	Eyal Subag (Bar Ilan - Israel)	TBA	Zoom link
April 23	Gurbir Dhillon (Yale)	TBA	Zoom link

Abstracts

January 29: Nir Avni

Title: First order rigidity for higher rank lattices.

Abstract: I'll describe a new rigidity phenomenon for lattices in higher rank simple algebraic groups. Specifically, I'll explain why the first order theories of such groups do not have (finitely generated) deformations and why they are determined (in the class of finitely generated groups) by a single first order axiom.

The results are from joint works with Alex Lubotzky and Chen Meiri.

Marian Aprodu

TBA

TBA

Eyal Subag

TBA

TBA

Gurbir Dhillon

TBA

TBA