The $R_{\infty }$-nilpotency degree of some lollipop GBS groups

Wagner Sgobbi, Dalton Couto Silva, Daniel Vendrúscolo

We say that a group $G$ has the $R_{\infty }$ property if the number $R(\phi )$ of twisted conjugacy classes is infinite for any automorphism $\phi$ of $G$. The $R_{\infty }$-nilpotency deg…