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math.SP2014★ 2 cited
Isospectrality for graph Laplacians under the change of coupling at graph vertices: necessary and sufficient conditions
Yulia Ershova, Irina I. Karpenko, Alexander V. Kiselev
Laplace operators on finite compact metric graphs are considered under the assumption that matching conditions at graph vertices are of and types. Assuming rational indepe…
math.SP2014★ 1 cited
Isospectrality for graph Laplacians under the change of coupling at graph vertices
Yulia Ershova, Irina I. Karpenko, Alexander V. Kiselev
Laplacian operators on finite compact metric graphs are considered under the assumption that matching conditions at graph vertices are of and types. An infinite series of…