The $R_{\infty }$-property for right-angled Artin groups

Karel Dekimpe, Pieter Senden

Given a group $G$ and an automorphism $\phi$ of $G$, two elements $x,y\in G$ are said to be $\phi$-conjugate if $x=gy\phi (g{)}^{-1}$ for some $g\in G$. The number of equivalence classe…