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Plane Cremona maps preserving a Euclidean volume form

Marc Abboud, Jérémy Blanc, Stéphane Lamy

Source record

Source: arXiv

Published: Oct 12, 2026

arXiv: 2610.17432

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Source abstract

We give a presentation by generators and relations of the group of birational transformations of the plane preserving a differential form with poles along a triple line. This group strictly contains the automorphism group of the affine plane.

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