On the eigenvalue estimates for the weighted Laplacian on metric graphs

Details On the eigenvalue estimates for the weighted Laplacian on metric graphs On the eigenvalue estimates for the weighted Laplacian on metric graphs

2002-01-03

arxiv.org/abs/math/0201015v1

In the book: INTERNATIONAL MATHEMATICAL SERIES. Nonlinear Problems in Mathematical Physics and Related Topics I. In Honor of P

Mathematics

Spectral Theory

Scientific paper

Eigenvalue behavior for the equation -\lambda y"=Vu on the edges of a graph G of final total length, with a non-negative weight function V and under the Kirchhoff matching conditions at the vertices and zero boundary condition at at least one point of G, is studied. It is shown that the eigenvalues satisfy an inequality which involves the length |G| and the total mass corresponding to V but otherwise does not depend on the graph. Applications and generalizations of this result are also discussed.

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