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Johannes Nicaise: Variation of stable birational type and bounds for complete intersections

Tid: To 2021-09-02 kl 14.30 - 15.30

Plats: Institut Mittag-Leffler, Seminar Hall Kuskvillan (alt. Zoom, meeting ID: 921 756 1880)

Medverkande: Johannes Nicaise (KU Leuven / Imperial College London)

Abstract: This talk is based on joint work with John Christian Ottem. I will explain a generalization of results by Shinder and Voisin on variation of stable birational types in degenerating families, and how this can be used to extend Schreieder's non-stable rationality bounds from hypersurfaces to complete intersections in characteristic zero. This yields new results already for complete intersections of quadrics.