University of Chicago Number Theory Seminar

Winter 2012: Wednesday 2:30-4pm, room E312

This is the homepage of Number Theory Seminar at University of Chicago. To get on or off the mailing list, you can either go to or contact Matthew Morrow or Liang Xiao.

Note the new time this quarter.

Click here to see the location of Eckhart Hall, and here for driving directions to University of Chicago.

One may also want to check out

  • Geometric Langlands Seminar Monday and Thursday 4:30pm
  • Northwestern University Number Theory Seminar Monday 3pm
  • UIC Number Theory Seminar Monday 3pm

    Click here to see the schedule of previous quarters: Winter 2010 / Spring 2010 / Fall 2010 / Winter 2011 / Spring 2011 / Fall 2011 / Winter 2012 / Spring 2012 / Fall 2012 / Winter 2013 / Spring 2013 / Fall 2013 / Winter 2014

    When an abstract is available, click on "Show Abstract" to expand the abstract, or click on "Hide Abstract" to hide it.





    January 4

    No speakers

    No seminars this week

    January 11

    Mirela Çiperiani
    (U Texas at Austin)

    The divisibility of the Tate-Shafarevich group of an elliptic curve in the Weil-Châtelet group
    In this talk I will report on progress on the intersection of the Tate-Shafarevich group with the maximal divisible subgroup of the Weil-Châtelet group ....(Show Abstract)

    January 18

    Takeshi Saito
    (U of Tokyo)

    Discriminant and determinant of a hypersurface of even dimension
    The determinant of the cohomology of a smooth hypersurface ....(Show Abstract)

    Monday January 16, Takeshi Saito will give the following talk in Geometric Langlands Seminar.
    A Riemann-Roch formula for l-adic sheaves on varieties over a local field
    We generalize the definition of Swan conductors to a constructible l-adic sheaf on a variety over a local field and prove a Riemann-Roch formula ....(Show Abstract)

    January 25

    Nick Ramsey

    p-adic interpolation of square roots of central values of L-functions attached to modular forms
    I'll explain an application to interpolation of special values of modular L-functions .... (Show Abstract)

    February 1

    David Savitt
    (U of Arizona)

    Crystalline extensions and the weight part of Serre's conjecture
    We will discuss the proof of the weight part of Serre's conjecture ....(Show Abstract)

    February 8

    Kwangho Choiy

    Transfer of Plancherel measures for discrete series representations between p-adic inner forms
    I shall discuss the behavior of the Plancherel measure .... (Show Abstract)

    February 15

    Kartik Prasanna
    (U of Michigan)

    Periods of quaternionic Shimura varieties
    I will discuss a more precise form of Shimura's conjecture .... (Show Abstract)

    February 22

    Sungmun Cho

    Local Densities of Quadratic Forms and Group Schemes in Residue Characteristic 2
    The celebrated Smith-Minkowski-Siegel mass formula expresses the total mass of an integral quadratic form Q .... (Show Abstract)

    February 29

    Yiannis Sakellaridis
    (Rutgers Univ at Newark)

    Spherical periods, and the relative trace formula "beyond endoscopy"
    I will describe an approach to general conjectures regarding the Euler factorization of (most) periods of automorphic forms .... (Show Abstract)

    Thursday, March 1, 4-5pm, Room E206. Yiannis Sakellaridis kindly agrees to give another informal talk.
    Dual groups of spherical varieties and the relative Langlands program
    Spherical varieties form a wide class of interesting (almost) homogeneous spaces for reductive groups ....(Show Abstract)

    March 7

    Simon Marshall
    (Northwestern Univ.)

    Multiplicities of automorphic forms on GL2
    I will discuss some ideas related to the theory of p-adically completed cohomology ....(Show Abstract)

    March 14

    Ali Altug

    Metaplectic Ramanujan conjecture over function fields
    The Ramanujan conjecture states that given a holomorphic cusp form .... (Show Abstract)

    This page is maintained by Liang Xiao; it was shamelessly copied from Kiran Kedlaya, which in turn was shamelessly copied from Jason Starr's page, which in turn was shamelessly copied from Ravi Vakil's page, which in turn was shamelessly copied from Pasha Belorousski's page at the University of Michigan. For more sites with a similar pedigree, see Michael Thaddeus's list or Jim Bryan's list.