M. Malamud

activity

20002026

most citedWeyl function of a Hermitian operator and its connection with characteristic function

13 citations · 49 across the 25 of their papers we have counts for

collaborators

Showing 2020Show all

3 papers · 1 filter

math.SP2020

Stability of spectral characteristics and Bari basis property of boundary value problems for $2 \times 2$ Dirac type systems

Anton A. Lunyov, Mark M. Malamud

The paper is concerned with the stability property under perturbation $Q \to Q$ of different spectral characteristics of a BVP associated in $L^{2} ([0, 1]; C^{2})$ with the…

math.SP2020★ 4 cited

Non-compact quantum graphs with summable matrix potentials

Yaroslav Granovskyi, Mark Malamud, Hagen Neidhardt

Let $G$ be a metric noncompact connected graph with finitely many edges. The main object of the paper is the Hamiltonian $H_{α}$ associated in $L^2(\mathcal{G};\mathb…

math.SP2020

Deficiency indices and discreteness property of block Jacobi matrices and Dirac operators with point interactions

Viktoriya Budyka, Mark Malamud

The paper concerns with infinite symmetric block Jacobi matrices $J$ with $p \times p$ -matrix entries. We present new conditions for general block Jacobi matrices to be selfadjo…

Stability of spectral characteristics and Bari basis property of boundary value problems for 2×2 Dirac type systems

Non-compact quantum graphs with summable matrix potentials

Deficiency indices and discreteness property of block Jacobi matrices and Dirac operators with point interactions

Stability of spectral characteristics and Bari basis property of boundary value problems for $2 \times 2$ Dirac type systems