Feb. 5 | Jordan Ellenberg (Wisconsin-Madison) | Counting rational points on stacks |

Feb. 12 | Rachel Pries (Colorado State) | The intersection of the Torelli locus with the non-ordinary locus in PEL-type Shimura varieties |

Feb. 19 | Ila Varma (UToronto/UCSD) | Malle's conjecture for octic D_4-fields |

Feb. 26 | Florian Richter (Northwestern) | Dynamical generalizations of the prime number theorem and disjointness of additive and multiplicative semigroup actions. |

Mar. 4 | Alex Cowan (Harvard) | Non-random behaviour in sums of modular symbols |

Mar. 11 | Vesselin Dimitrov (UToronto) | Schinzel-Zassenhaus, height gap and overconvergence |

Mar. 18 | No Seminar (spring break) | |

Mar. 25 | Francesc Fite (MIT) | Sato-Tate groups of abelian threefolds. Slides |

Apr. 1 | Shekhar Khare (UCLA) | Wiles defect for Hecke algebras that are not complete intersections. Slides |

Apr. 8 | Jacob Tsimerman (UToronto) | Bounding Selmer groups of finite Galois modules. Slides |

Apr. 15 | Daniel Kriz (MIT) | Converse theorems for supersingular CM elliptic curves. Slides |

Apr. 22 | Jared Weinstein (BU) | Modularity for self-products of elliptic curves over function fields. Slides |

Apr. 29 | No Seminar | Cancelled (due to Covid-19) |

May. 6 | James Newton (King's College London) | Symmetric power functoriality for modular forms. Slides |

May. 13 | Arthur-Cesar Le Bras (CNRS/Paris-13) | Prismatic Dieudonne theory. Slides |

May. 20 | Preston Wake (Michigan State) | Tame derivatives and the Eisenstein ideal |

Sep. 11 | Fabian Gundlach (Harvard) | Multiplication tables of Galois extensions |

Sep. 18 | Wei Zhang (MIT) | The arithmetic fundamental lemma for diagonal cycles |

Sep. 25 | Tony Feng (MIT) | Steenrod operations and the Artin-Tate pairing |

Oct. 2 | Ananth Shankar (MIT) | Isogenies between abelian varieties in positive and mixed characteristic |

Oct. 9 | Stefan Patrikis (Utah) | Geometric lifts of odd Galois representations |

Oct. 16 | Bejamin Matschke (BU) | Proofs by Example |

Oct. 23 | Evan O'Dorney (Princeton) | Reflection thoerems generalizing the Ohno-Nakagawa identities |

Oct. 30 | Yifeng Liu (Yale) | Isolation of L^2 spectrum and Gan-Gross-Prasad conjecture |

Nov. 6 | Kestutis Cesnavicius (CNRS/Paris-Sud) | Purity for flat cohomology |

Nov. 13 | Daxin Xu (Caltech) | Bessel F-isocrystals for reductive groups |

Nov. 20 | Yihang Zhu (Columbia) | Stabilization of the trace formula for abelian-type Shimura varieties |

Nov. 27 | No Seminar (Thanksgiving) | |

Dec. 4 | Michele Fornea (Princeton) | On the Arithmetic of elliptic curves over quintic fields |

Dec. 11 | Liang Xiao (BICMR/Peking) | Slopes of modular forms and ghost conjecture of Bergdall and Pollack |

Organized by Fabian Gundlach and Zijian Yao