Urbana Campus Research Calendar (OVCRI)

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Number Theory Seminar

Event Type
Seminar/Symposium
Sponsor
Department of Mathematics
Location
Altgeld Hall 347
Date
Feb 4, 2025   11:00 - 11:50 am  
Speaker
Aaron Landesman (Harvard)
Contact
Jesse Thorner and Yuan Liu
E-Mail
jat9@illinois.edu and yyyliu@illinois.edu
Originating Calendar
Number Theory Seminar Calendar

Title: The Cohen-Lenstra moments over function fields

Abstract: The Cohen-Lenstra heuristics are influential conjectures in arithmetic statistics from 1984 which predict the average number of p-torsion elements in class groups of quadratic fields, for p an odd prime. So far, this average number has only been computed for p = 3. In joint work with Ishan Levy, we verify this prediction for arbitrary p over suitable function fields. The key input to the proof is a computation of the stable homology of Hurwitz spaces associated to dihedral groups.

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