Departmental Colloquium
Burt Totaro
UCLA/Cambridge
The integral Hodge conjecture for 3-folds
Abstract: The Hodge conjecture predicts which rational homology classes
on a smooth complex projective variety can be represented by linear
combinations of complex analytic subvarieties. In other words,
it is about the difference between topology and complex analysis
(or algebraic geometry). The integral Hodge conjecture,
the analogous conjecture for integral homology classes,
is false in general. We discuss negative results
and some new positive results on the integral Hodge conjecture
for 3-folds.
Friday November 16, 2012 at 3:00 PM in SEO 636