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Number Theory / Representation Theory Seminar, University of Wisconsin - Madison

  • When: Thursdays, 2:30 PM – 3:30 PM, unless otherwise noted
  • Where: Van Vleck B139 or remotely
  • Please join the NT/RT mailing list: (you must be on a math department computer to use this link).

There is also an accompanying graduate seminar, which meets on Tuesdays.

The calendar for Spring 2024 is at Spring 2024

Past Semesters

You can find our Spring 2023 speakers in Spring 2023

You can find our Fall 2022 speakers in Fall 2022

You can find our Spring 2022 speakers in Spring 2022.

You can find our Fall 2021 speakers in Fall 2021.

You can find our Spring 2021 speakers in Spring 2021.

You can find our Fall 2020 speakers in Fall 2020.

You can find our Spring 2020 speakers in Spring 2020.
You can find our Fall 2019 speakers in Fall 2019.
You can find our Spring 2019 speakers in Spring 2019.
You can find our Fall 2018 speakers in Fall 2018.

Fall 2023 Semester

Date Speaker (click for homepage) Title (click for abstract)
Sept 7 Jiaqi Hou (Madison) Restrictions of eigenfunctions on arithmetic hyperbolic 3-manifolds
Sept 14 Ruofan Jiang (Madison) mod p analogue of Mumford-Tate and André-Oort conjectures for GSpin Shimura varieties
Sept 21 Andreea Iorga (U Chicago) Realising certain semi-direct products as Galois groups
Sept 28
Oct 5 Ziquan Yang (UW Madison) Arithmetic Deformation of Line Bundles
Oct 12 Baiqing Zhu (Columbia) Arithmetic Siegel-Weil formula on the modular curve X_0(N)
Oct 19 Jordan Ellenberg What is the mod n Selmer group of a random quadratic twist of an abelian variety over a function field?
Oct 26 Simon Marshall Large values of eigenfunctions on hyperbolic manifolds
Nov 2 Tonghai Yang Regularized theta lifting and Complex Multiplication
Nov 9 Tung Nguyen (University of Western Ontario) On the arithmetic of Fekete polynomials of principal Dirichlet characters
Nov 16 Maksym Radziwill (Northwestern) Gap disribution of [math]\displaystyle{ \sqrt{n} }[/math] modulo 1 and the circle method
Nov 23 Thanksgiving - no seminar
Nov 30 Joey Yu Luo On the arithmetic moduli of unitary Shimura varieties
Dec 7 Chengyang Bao (U Chicago) Computing crystalline deformation rings via the Taylor--Wiles--Kisin patching method

*to be confirmed

Organizer contact information

Ziquan Yang zyang352@wisc.edu


This is a virtual math seminar on open conjectures in number theory and arithmetic geometry. The seminar will be presented in English at (1 pm Eastern time)=(10 am Pacific time), every first and third Tuesday of the month. The Math Department of UW, Madison broadcasts the seminar in the math lounge room at Room 911, Van Vleck Building. For more information, please visit the official website: VaNTAGe

New Developments in Number Theory

This is a new seminar series that features the work of early career number theorists from around the globe. For more information, please visit the official website: NDNT

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