2 problems

Let $\Gamma$ be a virtually polycyclic group and let $\varphi:\Gamma\to\Gamma$ be an endomorphism. When the Reidemeister zeta function is well-defined, it is given by … where…

Let $G$ be an abelian group of finite rank, let $\varphi$ be a tame automorphism of $G$, and let $Z_\varphi(s)$ denote its Reidemeister zeta function. Bell–Miles–Ward's conjecture.…