Property $R_{\infty }$ for some spherical and affine Artin-Tits groups

Matthieu Calvez, Ignat Soroko

Let $n\ge 2$. In this note we give a short uniform proof of property $R_{\infty }$ for the Artin-Tits groups of spherical types $A_n$, $B_n$, $D_4$, $I_2(m)$ ($m\ge 3$), their pure subg…