Algebraic and Arithmetic Geometry @ Bielefeld
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The Bielefeld Algebraic and Arithmetic Geometry Oberseminar, Winter Semester 2018-2019

This semester, our Oberseminar will focus on recent advances concerning rationality questions for algebraic varieties.

Talks

Wednesday

24 October, 2018

15:00 U2-232 Fei Xie
Overview
17:00 U2-232 Charles Vial
On Claire Voisin's "Unirational threefolds with no universal codimension 2 cycle"

Wednesday

14 November, 2018

15:00 U2-232 Thomas Zink
On Colliot-Thelene and Pirutka's "hypersurfaces quartiques de dimension 3 : non rationalité stable"
17:00 U2-232 Eike Lau
On Totaro's "Hypersurfaces that are not stably rational"

Wednesday

21 November, 2018

15:00 U2-232 Charles Vial
On Nicaise and Shinder's "The motivic nearby fiber and degeneration of stable rationality"
17:00 U2-232 Fei Xie
On Addington and Thomas' "Hodge theory and derived categories of cubic fourfolds"

Wednesday

9 January, 2019

15:00 U2-232 Karsten Schroedter
On Schreieder's "On the rationality problem for quadric bundles"
17:00 U2-232 Michael Spiess
On Schreieder's "Stably irrational hypersurfaces of small slope"