Bifurcations of essential spectra generated by a small non-Hermitian hole. I: Meromorphic continuations
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Publication:825081
DOI10.1134/S1061920821040026zbMath1479.35582OpenAlexW4200294524MaRDI QIDQ825081
Denis I. Borisov, Dmitry A. Zezyulin
Publication date: 17 December 2021
Published in: Russian Journal of Mathematical Physics (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1134/s1061920821040026
Boundary value problems for second-order elliptic equations (35J25) General topics in linear spectral theory for PDEs (35P05) Perturbations in context of PDEs (35B20)
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Bifurcations of essential spectra generated by a small non-Hermitian hole. II: Eigenvalues and resonances, On perturbation of thresholds in essential spectrum under coexistence of virtual level and spectral singularity, On the bifurcation of thresholds of the essential spectrum with a spectral singularity
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