Non-isometric pairs of Riemannian manifolds with the same Guillemin-Ruelle zeta function

Hy Lam

In 1985, T. Sunada constructed a vast collection of non-isometric Laplace-isospectral pairs $(M_1,g_1)$, resp. $(M_2,g_2)$ of Riemannian manifolds. He further proves that the Ruell…