2 papers
math.GR2020
Introduction to a small cancellation theorem
Stéphane Lamy, Anne Lonjou
This note is intended as an introduction to two previous works respectively by Dahmani, Guirardel, Osin, and by Cantat, Lamy. We give two proofs of a Small Cancellation Theorem for…
math.GR2019
Elements generating a proper normal subgroup of the Cremona group
Serge Cantat, Vincent Guirardel, Anne Lonjou
Consider an algebraically closed field k and the Cremona group of all birational transformations of the projective plane over k. We characterize infinite order elements of this gro…