Algebraic geometry online seminar on K3 surfaces

vfantini vfantini at
Wed May 27 11:58:51 CEST 2020


Dear all, this is a reminder for the next seminar on K3 surfaces.

Speaker: Alejandra Rincón Hidalgo  (ICTP)

Title: Roitman's Theorem for K3 surfaces

Abstract:  The aim of this talk is to prove Roitman's theorem for a K3 
surface X i.e. that CH^2(X) is torsion free.
We first start by studying the monodromy representation of a Lefschetz 
fibration. We then reduced the main problem to study torsion points on 
J(C) for a nonsingular curve C very ample on X. Since C belongs to a 
Lefschetz pencil on X, we use its monodromy representation to study 
cycles on C.
If time permits we give an alternative approach for elliptic K3 surfaces.

When:*Friday 29th May, at 16:00 *

Join Zoom Meeting

!! Since last time the meeting was interrupted, we add a *second link* 
below: you should join this second meeting just in case the previous one 
suddenly stops.

Everyone is welcome to attend!



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