Fri | Jul 30 | 19:00 | Federico Scavia | The Grothendieck ring of stacks | |

Fri | Jul 23 | 19:00 | Tom Graber | Virtual localization for relative obstruction theories and stable log maps | |

Fri | Jul 16 | 19:00 | Raymond Cheng | $q$-bic Hypersurfaces | |

Fri | Jul 09 | 19:00 | Denis Nardin | Quadratic forms on rings and the homotopy limit problem | |

Fri | Jun 11 | 19:00 | Lena Ji | The Noether–Lefschetz theorem | |

Fri | Jun 04 | 19:00 | Martin Ulirsch | Tropical geometry and logarithmic compactifications of reductive algebraic groups | |

Fri | May 28 | 19:00 | Dhruv Ranganathan | Constructing logarithmic moduli | |

Fri | May 21 | 19:00 | Eric Katz | Iterated p-adic integration on semistable curves | |

Fri | May 14 | 19:00 | Joachim Jelisiejew | Pathologies on the Hilbert scheme of points | |

Fri | May 07 | 19:00 | Geoff Smith | Normal bundles of rational curves and separably rationally connected varieties | |

Fri | Apr 30 | 19:00 | Remy van Dobben de Bruyn | Constructing varieties with prescribed Hodge numbers modulo m in positive characteristic | |

Fri | Apr 23 | 19:00 | Michael Temkin | Logarithmic resolution of singularities | |

Fri | Apr 16 | 19:00 | Samir Canning | The Chow rings of $M_7$, $M_8$, and $M_9$ | |

Fri | Apr 09 | 19:00 | Sam Molcho | The strict transform in logarithmic geometry | |

Fri | Apr 02 | 19:00 | Matt Baker | Pastures, Polynomials, and Matroids | |

Fri | Mar 26 | 19:00 | Nikolas Kuhn | A blowup formula for virtual Donaldson invariants | |

Sat | Mar 13 | 00:00 | Yuuji Tanaka | On the virtual Euler characteristics of the moduli spaces of semistable sheaves on a complex projective surface | |

Fri | Mar 05 | 20:00 | Arend Bayer | Fano varieties: from derived categories to geometry via stability | |

Fri | Feb 26 | 20:00 | Jihao Liu | Complements and local singularities in birational geometry | |

Fri | Feb 19 | 20:00 | Izzet Coskun | Algebraic Hyperbolicity and Lang-type loci in hypersurfaces | |

Fri | Feb 12 | 20:00 | Laure Flapan | Fano manifolds associated to hyperkähler manifolds | |

Fri | Feb 05 | 20:00 | Sean Keel | Berkovich geometry and mirror symmetry | |

Fri | Jan 29 | 20:00 | Soumya Sankar | Derived equivalences of gerbey curves | |

Fri | Jan 22 | 20:00 | Takumi Murayama | Grothendieck's localization problem | |

Fri | Jan 15 | 20:00 | Ben Antieau | Genus 1 curves in twisted projective spaces | |

Fri | Dec 04 | 20:00 | Rahul Pandharipande | The top Chern class of the Hodge bundle and the log Chow ring of the moduli space of curves | |

Fri | Nov 13 | 20:00 | Taylor Dupuy | Abelian Varieties Over Finite Fields in the LMFDB | |

Fri | Nov 06 | 20:00 | Akhil Mathew | \'Etale K-theory and motivic cohomology | |

Fri | Oct 30 | 19:00 | Aaron Landesman | The Torelli map restricted to the hyperelliptic locus | |

Fri | Oct 23 | 19:00 | Jarod Alper | Coherent completeness and the local structure of algebraic stacks | |

Fri | Oct 16 | 19:00 | Barbara Fantechi | Infinitesimal deformations of semi-smooth varieties | |

Fri | Oct 09 | 19:00 | Karen Smith | Extremal Singularities in Prime Characteristic | |

Fri | Oct 02 | 19:00 | Juliette Bruce | The top weight cohomology of $A_g$ | |

Fri | Sep 25 | 19:00 | Richard Thomas | Square root Euler classes and counting sheaves on Calabi-Yau 4-folds | |

Fri | Sep 18 | 19:00 | Rachel Webb | Virtual cycle on the moduli space of maps to a complete intersection | |

Fri | Sep 11 | 19:00 | Andrew Kobin | Zeta functions and decomposition spaces | |

Fri | Sep 04 | 19:00 | Chris Eur | Simplicial generation of Chow rings of matroids | |

Fri | Aug 28 | 19:00 | Martin Olsson | Determinants and deformation theory of perfect complexes | |

Fri | Aug 21 | 19:00 | Hannah Larson | Brill--Noether theory over the Hurwitz space | |

Fri | Jul 31 | 19:30 | Dan Abramovich | Resolution and logarithmic resolution via weighted blowings up | |

Fri | Jul 24 | 19:00 | Brendan Hassett | Symbols, birational geometry, and computations | |

Fri | Jul 17 | 19:00 | Laura Escobar | Wall-crossing phenomena for Newton-Okounkov bodies | |

Fri | Jul 10 | 19:00 | John Christian Ottem | On (2,3)-fourfolds | |

Fri | Jun 12 | 19:00 | Wei Ho | Splitting Brauer classes | |

Fri | Jun 12 | 17:45 | Margaret Bilu | Arithmetic and motivic statistics via zeta functions | |

Fri | Jun 05 | 19:00 | Bhargav Bhatt | A p-adic Riemann-Hilbert functor and vanishing theorems | |

Fri | May 29 | 17:45 | Yuchen Liu | Moduli spaces of quartic hyperelliptic K3 surfaces via K-stability | |

Fri | May 22 | 18:00 | Chenyang Xu | K-moduli of Fano varieties | |

Fri | May 15 | 19:00 | Rob Silversmith | Studying subschemes of affine/projective space via matroids | |

Fri | May 15 | 17:45 | Rohini Ramadas | The locus of post-critically finite maps in the moduli space of self-maps of $\mathbb{P}^n$ | |

Fri | May 08 | 19:00 | Bjorn Poonen | Bertini irreducibility theorems via statistics | |

Fri | May 08 | 17:45 | Julie Desjardins | Density of rational points on a family of del Pezzo surface of degree 1 | |

Fri | May 01 | 19:00 | Burt Totaro | The Hilbert scheme of infinite affine space | |

Fri | May 01 | 17:45 | Borys Kadets | 38406501359372282063949 & all that: Monodromy of Fano problems | |

Fri | Apr 24 | 18:00 | Kirsten Wickelgren | There are $160,839 \langle 1 \rangle + 160,650 \langle -1\rangle$ 3-planes in a 7-dimensional cubic hypersurface | |

Fri | Apr 17 | 18:00 | Gavril Farkas | Green’s conjecture via Koszul modules | |