Date and Time (Pacific) 
Speaker 
Title 
April 3, 4 pm 
Will Sawin (Columbia) 
The Shafarevich conjecture for hypersurfaces in abelian varieties (abstract) 
April 17, 1112:30 
Gavril Farkas (Humboldt) 
Green’s Conjecture via Koszul modules 
April 24, 1112:30 
Kirsten Wickelgren (Duke) 
There are 160,839 + 160,650 3planes in a 7dimensional cubic hypersurface (video) 
May 1, 10:4511:45 
Borys Kadets (MIT) 
38406501359372282063949 & all that: Monodromy of Fano Problems 
May 1, 121 
Burt Totaro (UCLA) 
The Hilbert scheme of infinite affine space 
May 8, 10:4511:45 
Julie Desjardins (Toronto) 
Density of rational points on a family of del Pezzo surface of degree 1 (slides) 
May 8, 121 
Bjorn Poonen (MIT) 
Bertini irreducibility theorems via statistics 
May 15 10:4511:45 
Rohini Ramadas (Brown) 
The locus of postcritically finite maps in the moduli space of selfmaps of 
May 15, 121 
Rob Silversmith (Northeastern) 
Studying subschemes of affine/projective space via matroids 
May 22, 1112:30 
Chenyang Xu (MIT) 
Kmoduli of Fano varieties 
May 29, 10:4511:45 
Yuchen Liu (Yale) 
Moduli spaces of quartic hyperelliptic K3 surfaces via Kstability (slides) 
June 5, 121 
Bhargav Bhatt (Michigan) 
A padic RiemannHilbert functor and vanishing theorems 
June 12, 10:4511:45 
Margaret Bilu (NYU) 
Arithmetic and motivic statistics via zeta functions (video) 
June 12, 121 
Wei Ho (Michigan) 
Splitting Brauer classes (slides) 
July 10, 121 
John Christian Ottem (Oslo) 
On (2,3)fourfolds (video, slides)

July 17, 121 
Laura Escobar Vega (Washington University St. Louis) 
Wallcrossing phenomena for NewtonOkounkov bodies (video, slides) 
July 24, 121 
Brendan Hassett (Brown/ICERM) 
Symbols, birational geometry, and computations (video, slides) 
July 31, 12:301:30 
Dan Abramovich (Brown) 
Resolution and logarithmic resolution via weighted blowings up (video, slides) 
August 21 
Hannah Larson (Stanford) 
Brill–Noether theory over the Hurwitz space (slides)

August 28 
Martin Olsson (Berkeley) 
Determinants and deformation theory of perfect complexes (video, slides)

September 4 
Christopher Eur (Stanford) 
Simplicial generation of Chow rings of matroids (slides) 
September 11 
Andrew Kobin (Santa Cruz) 
Zeta functions and decomposition spaces (video, slides) 
September 18 
Rachel Webb (Berkeley) 
Virtual cycle on the moduli space of maps to a complete intersection (slides)

September 25 
Richard Thomas (Imperial College London) 
Square root Euler classes and counting sheaves on CalabiYau 4folds (video, slides)

October 2 
Juliette Bruce (Berkeley) 
The top weight cohomology of (video, slides) 
October 9 
Karen Smith (University of Michigan) 
Extremal Singularities in Prime Characteristic (video)

October 16 
Barbara Fantechi (SISSA, Italy) 
Infinitesimal deformations of semismooth varieties (video)

October 23 
Jarod Alper (University of Washington) 
Coherent completeness and the local structure of algebraic stacks (video)

October 30 
Aaron Landesman (Stanford) 
The Torelli map restricted to the hyperelliptic locus (video)

November 6 
Akhil Mathew (University of Chicago) 
Etale Ktheory and motivic cohomology (video, slides)

November 13 
Taylor Dupuy (University of Vermont) 
Abelian Varieties Over Finite Fields in the LMFDB (video, slides)

December 4 
Rahul Pandharipande (ETH Zurich) 
The top Chern class of the Hodge bundle and the log Chow ring of the moduli space of curves (video, slides)
