A note on Ambarzumian's theorem for quantum graphs
arXiv:2308.10881 · doi:10.1007/s00013-024-01997-9
Abstract
Based on the main result presented in a recent paper, we derive Ambarzumian-type theorems for Schrödinger operators defined on quantum graphs. We recover existing results such as the classical theorem by Ambarzumian and establish some seemingly new statements, too.
5 pages, comments welcome!