Speaker:  Xinyu Zhou (Boston University)

Title:  The étale-Brauer obstruction and insufficiency of the obstructions

Topics:  The étale-Brauer set; comparison with the descent set; insufficiency of the obstructions for a quadric bundle over a curve.

Reference: Poonen, Rational points on varieties, Sections 8.5.2-8.5.3 and 8.6.2.

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