Recently, Lin and Shinder constructed non-trivial homomorphisms from Cremona groups of rank >2 to Z using motivic techniques. In this short note we propose an alternative perspective from median geometry on their theorem.
Indicateurs
1 Consultations de la notice
Détails
Titre
On a theorem by Lin and Shinder through the lens of median geometry
Créateurs - sans rôle
Anthony Genevois - Inst Montpellierain Alexander Grothendieck, 499-554 Rue Truel, F-34090 Montpellier, France
200020_192217 / SNSF; Swiss National Science Foundation (SNSF)
2020-101034228-WOLFRAM2 / H2020-MSCA-COFUND
PID2022-138719NA-I00 / MCIN/AEI
IT1483-22 / Basque Government
GOFR ANR-22-CE40-0004 / French National grant; Agence Nationale de la Recherche (ANR)
Identifiants
99162771209311
Unité académique
Institut Montpelliérain Alexander Grothendieck - IMAG