Noema Nicolussi

activity

20172025

most citedSelf-adjoint and Markovian extensions of infinite quantum graphs

21 citations · 93 across the 15 of their papers we have counts for

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Showing 2017 · math.SPShow all

2 papers · 2 filters

math.SP2017★ 2 cited

On the Hamiltonian-Krein index for a non-self-adjoint spectral problem

Aleksey Kostenko, Noema Nicolussi

We investigate the instability index of the spectral problem $- c^{2} y^{''} + b^{2} y + V (x) y = - i z y^{'}$ on the line $R$ , where $V \in L_{loc}^{1} (R)$ is rea…

math.SP2017★ 15 cited

Spectral Estimates for Infinite Quantum Graphs

Aleksey Kostenko, Noema Nicolussi

We investigate the bottom of the spectra of infinite quantum graphs, i.e., Laplace operators on metric graphs having infinitely many edges and vertices. We introduce a new definiti…