The INI has a new website!

This is a legacy webpage. Please visit the new site to ensure you are seeing up to date information.

Skip to content

NAG

Seminar

Counting local systems with local principal unipotent monodromy

Flicker, Y (Ohio State)
Thursday 17 December 2009, 15:30-16:30

Seminar Room 1, Newton Institute

Abstract

We compute, jointly with P. Deligne, the number of equivalence classes of irreducible rank n ell-adic local systems on the geometric X-S, namely n-dimensional ell-adic representations of pi_1(geometrix(X-S)), invariant under the Frobenius, whose local monodromy at each point of S is a single Jordan block of rank n. Here X is a smooth projective absolutely irreducible curve over the finite field of cardinality q, S a finite set of closed points of X of cardinality N>1, ell a prime with (ell,q)=1, and n>1 an integer.

Video

The video for this talk should appear here if JavaScript is enabled.
If it doesn't, something may have gone wrong with our embedded player.
We'll get it fixed as soon as possible.

Back to top ∧