TY  - JOUR
AU  - Marché, Julien
AU  - Wolff, Maxime
TI  - The parallelogram identity on groups and deformations of the trivial character in $\protect \mathrm{SL}_2(\protect \mathbb{C})$
JO  - Journal de l’École polytechnique — Mathématiques
PY  - 2020
SP  - 263
EP  - 285
VL  - 7
PB  - Ecole polytechnique
UR  - http://www.numdam.org/articles/10.5802/jep.117/
DO  - 10.5802/jep.117
LA  - en
ID  - JEP_2020__7__263_0
ER  -