Plenary talk

Monday, July 19, 12:15 ~ 13:15 UTC-3

On the coniveau of algebraic varieties

Claire Voisin

CNRS, IMJ-PRG, France   -   This email address is being protected from spambots. You need JavaScript enabled to view it.

To study the topology of a complex algebraic variety, it is natural to try to understand which homology classes are supported on closed algebraic subvarieties of a given dimension. We will describe classical and recent results on this question, and relate these develoments to the rationality problem, which asks for necessary criteria for a variety to be birational to affine space.

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