Operators and Matrices · Volume 14, Issue 3 Laplacians on bipartite metric graphs 14-38 Pages 535-553 DOI 10.7153/oam-2020-14-38 Downloads Short PDF Full PDF PNG Authors Pavel Kurasov Jonathan Rohleder Keywords quantum graph Laplacian eigenvalues bipartite graph spectral inequalities Subject classes 81Q35 34B45 34L05