Oct 24 – 28, 2022
Louvre Lens Vallée
Europe/Paris timezone
À l'occasion du 64ème anniversaire de Bruno Kahn

Steenrod operations and algebraic classes

Oct 25, 2022, 9:00 AM
Louvre Lens Vallée

Louvre Lens Vallée

84 Rue Paul Bert, 62300 Lens


Olivier Benoist (ENS, CNRS)


The first counterexamples to the integral Hodge conjecture,
due to Atiyah and Hirzebruch, exploit the action of Steenrod operations.
In this talk, we will further study the interaction of Steenrod
operations and algebraic classes, over arbitrary fields, and we will
derive new examples of non-algebraic cohomology classes.

Presentation materials