A global cohomological formula for the square class of the central value of a symplectic L-function

Tue Feb 8, 2022 4:30 p.m.—5:30 p.m.
Exterior of Sheffield-Sterling-Strathcona Hall featuring a stone carving of Yale's coat of arms and motto

This event has passed.

Seminar: 
Algebra and Number Theory Seminar

Event time: 
Tuesday, February 8, 2022 - 4:30pm

Speaker: 
Amina Abdurrahman

Speaker affiliation: 
Princeton

Event description: 
In the 70s Deligne gave a topological formula for the local epsilon factors attached to an orthogonal representation.
We consider the case of a symplectic representation and present a conjecture giving a topological formula for a finer invariant, the square class of its central value.
We also formulate a topological analogue of the statement, in which the central value of the L-function is replaced by Reidemeister torsion of 3-manifolds and give a sketch of the proofs.
This is joint work in progress with Akshay Venkatesh.

Research Area(s): 
Number Theory
Representation Theory