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TORSORS AND STABLE EQUIVARIANT BIRATIONAL GEOMETRY

Published online by Cambridge University Press:  11 October 2022

BRENDAN HASSETT
Affiliation:
Department of Mathematics, Brown University, Box 1917 151, Thayer Street, Providence, Rhode Island 02912, USA brendan_hassett@brown.edu
YURI TSCHINKEL*
Affiliation:
Courant Institute, New York University New York, New York 10012, USA Simons Foundation, 160 Fifth Avenue, New York, New York 10010, USA

Abstract

We develop the formalism of universal torsors in equivariant birational geometry and apply it to produce new examples of nonbirational but stably birational actions of finite groups.

Type
Article
Copyright
© The Author(s), 2022. Published by Cambridge University Press on behalf of Foundation Nagoya Mathematical Journal

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Footnotes

Hassett was partially supported by Simons Foundation Award 546235 and NSF grant 1701659, and Tschinkel by NSF grant 2000099.

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