Hearing the platycosms
arXiv:math/0311470
Abstract
A `platycosm' is a flat Riemannian 3-manifold without boundary. In this paper we prove that there is (up to scale) a unique isospectral pair of compact platycosms.
To appear in Math. Res. Lett. (2006). 20 pages, 20 figures. Minor changes to the 1st version