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arXiv · 2608.17821

Witt rings, Pfister forms, and equivariant birational geometry

Brendan Hassett·Yuri Tschinkel
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Abstract

We study equivariant birational geometry of quadrics with actions of finite groups and develop analogs of Witt groups and Pfister theory in the equivariant context.

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Brendan Hassett, Yuri Tschinkel. 2026-08-18. Witt rings, Pfister forms, and equivariant birational geometry. https://arxiv.org/abs/2608.17821

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