Spectral rigidity of automorphic orbits in free groups

Stefano Francaviglia, Mathieu Carette, Ilya Kapovich +1

It is well-known that a point $T\in c{v}_N$ in the (unprojectivized) Culler-Vogtmann Outer space $c{v}_N$ is uniquely determined by its \emph{translation length function} $||.||_T:F_N\…