Seminar Algebra and Geometry: Michel van Garrel (Warwick)

Prelog Chow rings and stable rationality in semistable degenerations

In this joint work with Christian Böhning and Hans-Christian von Bothmer we apply Voisin's criterion of existence of a decomposition of the diagonal to semistable degenerations. In doing so, we obtain partial results towards proving that very general cubic threefolds are stably irrational.

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