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arXiv · 2510.10838

Survey on Cremona groups from a median geometric point of view

Anne Lonjou
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Abstract

This expository article builds on lecture notes from a minicourse entitled "Cremona groups and CAT(0) cube complexes" and given by the author as part of the 2023 Riverside Workshop on Geometric Group Theory. It presents recent constructions of actions of Cremona groups on median graphs aimed at both geometric group theorists and algebraic geometers.

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Anne Lonjou. 2025-10-12. Survey on Cremona groups from a median geometric point of view. https://arxiv.org/abs/2510.10838

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