%0 Journal Article %T Inaudibility of k-DĄŻAtri Properties %J Symmetry | An Open Access Journal from MDPI %D 2019 %R https://doi.org/10.3390/sym11101316 %X Working on closed Riemannian manifolds the first author and Schueth gave a list of curvature properties which cannot be determined by the eigenvalue spectrum of the Laplace¨CBeltrami operator. Following Kac, it is said that such properties are inaudible. Here, we add to that list the dimension of the manifold minus three new properties namely k-DĄŻAtri for k = 3 , Ą­ , dim M Łż 1 . View Full-Tex %U https://www.mdpi.com/2073-8994/11/10/1316