Almost Eigenvalues and Eigenvectors of Almost Mathieu Operators
DOI10.1007/978-3-030-69637-5_5zbMath1482.39028arXiv1501.06001OpenAlexW2265720130MaRDI QIDQ5020129
Thomas Strohmer, Timothy Wertz
Publication date: 4 January 2022
Published in: Applied and Numerical Harmonic Analysis (Search for Journal in Brave)
Full work available at URL: https://arxiv.org/abs/1501.06001
perturbation theoryHermite functionsdiscrete Schrödinger operatortime-frequency analysisTaylor expansionsSturm sequencesMathieu operator
Perturbation theory of linear operators (47A55) Eigenvalue problems for linear operators (47A75) Discrete version of topics in analysis (39A12) Difference operators (39A70) Linear difference operators (47B39)
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