Date 
Speaker  Seminar  Title 
Wednesday, September 09, 2020 Start: 4:00 PM
Location: Zoom * 
Sebastian Olano University of Michigan 
Algebraic Geometry 
On the nonnegativity of stringy Hodge numbers 
Wednesday, September 16, 2020 Start: 5:00 PM
Location: Zoom * 
Jakub Witaszek University of Michigan 
Algebraic Geometry 
Keel's theorem and quotients in mixed characteristic 
Wednesday, September 23, 2020 Start: 4:00 PM
Location: Zoom * 
Eva Elduque University of Michigan 
Algebraic Geometry 
Mixed Hodge structures on Alexander modules 
Wednesday, September 30, 2020 Start: 4:00 PM
Location: Zoom * 
Gebhard Martin University of Bonn 
Algebraic Geometry 
Automorphism schemes of elliptic surfaces 
Wednesday, October 07, 2020 Start: 4:00 PM
Location: Zoom * 
Michael Groechenig University of Toronto 
Algebraic Geometry 
padic integration for Hitchin systems and the fundamental lemma 
Wednesday, October 14, 2020 Start: 4:00 PM
Location: Zoom * 
Aleksandr Petrov Harvard 
Algebraic Geometry 
Irreducible padic local systems are de Rham up to a twist 
Wednesday, October 21, 2020 Start: 4:00 PM
Location: Zoom * 
Ziquan Yang Harvard 
Algebraic Geometry 
A Crystalline Torelli Theorem for Supersingular K3^ntype Varieties 
Wednesday, October 28, 2020 Start: 4:00 PM
Location: Zoom * 
Tuomas Tajakka University of Washington 
Algebraic Geometry 
Uhlenbeck compactification as a Bridgeland moduli space 
Wednesday, November 04, 2020 Start: 4:00 PM
Location: Zoom * 
Davesh Maulik MIT 
Algebraic Geometry 
Cohomology of the moduli of Higgs bundles and the HauselThaddeus conjecture 
Wednesday, November 11, 2020 Start: 4:00 PM
Location: Zoom * 
Daniel HalpernLeistner Cornell 
Algebraic Geometry 
Derived Thetastratifications and the Dequivalence conjecture 
Wednesday, November 18, 2020 Start: 4:00 PM
Location: Zoom East Hall * 
Lena Ji Princeton University 
Algebraic Geometry 
Geometrically nonreduced varieties 
Wednesday, November 25, 2020 Start: 4:00 PM
Location: Zoom * 
Joshua Lam Harvard 
Algebraic Geometry 
CalabiYau varieties and Shimura varieties 
Wednesday, December 02, 2020 Start: 4:00 PM
Location: Zoom * 
Stefan Schreieder Leibniz University Hannover 
Algebraic Geometry 
Refined unramified cohomology and algebraic cycles 
Wednesday, December 09, 2020 Start: 4:00 PM
Location: Zoom * 
Laure Flapan Michigan State University 
Algebraic Geometry 
Fano manifolds associated to hyperkähler manifolds 
Wednesday, January 13, 2021 Start: 4:00 PM
Location: 4096 East Hall 
Ruijie Yang Stony Brook University 
Algebraic Geometry 
Decomposition theorem for semisimple local systems 
Wednesday, January 20, 2021 Start: 4:00 PM
Location: Zoom East Hall * 
Kestutis Cesnavicius Orsay 
Algebraic Geometry 
GrothendieckSerre in the quasisplit unramified case 
Wednesday, January 27, 2021 Start: 4:00 PM
Location: 4096 East Hall 
Tudor Padurariu IAS 
Algebraic Geometry 
Noncommutative resolutions and intersection cohomology for quotient singularities 
Wednesday, February 03, 2021 Start: 4:00 PM
Location: Zoom * 
Naoki Koseki University of Edinburgh 
Algebraic Geometry 
Stronger BogomolovGieseker inequality via tilt stability 
Wednesday, February 10, 2021 Start: 4:00 PM
Location: Zoom * 
Christian Sevenheck TU Chemnitz 
Algebraic Geometry 
Free divisors, Vfiltration and Hodge ideals 
Wednesday, February 17, 2021 Start: 4:00 PM
Location: Zoom * 
Fumiaki Suzuki UCLA 
Algebraic Geometry 
An Oacyclic variety of even index 
Wednesday, February 24, 2021 Start: 4:00 PM
Location: Zoom * 
Giulia Saccà Columbia University 
Algebraic Geometry 
Birational geometry of the intermediate Jacobian fibration associated to a cubic fourfold 
Wednesday, March 03, 2021 Start: 4:00 PM
Location: Zoom * 
Matthew Ballard University of South Carolina and University of Michigan 
Algebraic Geometry 
Exceptional collections and rationality 
Wednesday, March 10, 2021 Start: 4:00 PM
Location: Zoom * 
Calum Spicer King's College London 
Algebraic Geometry 
Minimal models of foliations 
Wednesday, March 24, 2021 Start: 4:00 PM
Location: Zoom * 
Carolina Araujo IMPA 
Algebraic Geometry 
Birational geometry of CalabiYau pairs 
Wednesday, March 31, 2021 Start: 4:00 PM
Location: Zoom * 
Evgeny Shinder University of Sheffield 
Algebraic Geometry 
Factorization centers, Cremona groups and the Grothendieck ring of varieties 
Wednesday, April 07, 2021 Start: 4:00 PM
Location: Zoom * 
Aaron Pixton University of Michigan 
Algebraic Geometry 
Boundary vanishing and bridgeless curves 
Wednesday, April 14, 2021 Start: 4:00 PM
Location: Virtual * 
Sándor Kovács University of Washington 
Algebraic Geometry 
Hodge sheaves for singular families

Wednesday, April 21, 2021 Start: 4:00 PM
Location: Virtual * 
Burt Totaro UCLA 
Algebraic Geometry 
The Hilbert scheme of points on affine space 