Enriques surface fibrations with non-algebraic integral Hodge classes

Add to your list(s) Download to your calendar using vCal

• John Christian Ottem (University of Oslo)
• Monday 03 February 2020, 15:00-16:00
• Seminar Room 2, Newton Institute.

If you have a question about this talk, please contact INI IT.

KAH - K-theory, algebraic cycles and motivic homotopy theory

I will explain a construction of a certain pencil of Enriques surfaces with non-algebraic integral Hodge classes of non-torsion type. This gives the first example of a threefold with trivial Chow group of zero-cycles on which the integral Hodge conjecture fails. If time permits, I will explain an application to a classical question of Murre on the universality of the Abel-Jacobi maps in codimension three. This is joint work with Fumiaki Suzuki.​

This talk is part of the Isaac Newton Institute Seminar Series series.

This talk is included in these lists:

• All CMS events
• Featured lists
• INI info aggregator
• Isaac Newton Institute Seminar Series
• School of Physical Sciences
• Seminar Room 2, Newton Institute
• bld31

Note that ex-directory lists are not shown.