2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/90470Explicit, exact periodic orbit expansions for individual eigenvalues exist for a subclass of quantum networks called regular quantum graphs. We prove that all linear chain graphs have a regular regime.11 pages. Proceedings of the Fourth International Conference on Dynamical Systems and Differential EquationsQuantum Physicstext