Refined unramified cohomology

HARVARD-MIT ALGEBRAIC GEOMETRY

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May 4, 2021 3:00 pm - 4:00 pm
via Zoom Video Conferencing
Speaker:

Stefan Schreieder - University of Hannover

We introduce refined unramified cohomology and prove some
general comparison theorems to cycle groups. Our approach has several applications. For instance, it allows to construct the first example of a smooth complex projective variety whose Griffiths group has infinite torsion subgroup.

Zoom: https://harvard.zoom.us/j/91794282895?pwd=VFZxRWdDQ0VNT0hsVTllR0JCQytoZz09