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Relations between two parts of the spectrum of a Schrödinger operator and other remarks on the absolute continuity of the spectrum in a typical case. (English) Zbl 1480.81049

Exner, Pavel (ed.) et al., Partial differential equations, spectral theory, and mathematical physics. The Ari Laptev anniversary volume. Berlin: European Mathematical Society (EMS). EMS Ser. Congr. Rep., 355-365 (2021).
MSC:  81Q10 47F10 47A10
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On occurrence of resonances from multiple eigenvalues of the Schrödinger operator in a cylinder with distant perturbations. (English. Russian original) Zbl 1473.35034

J. Math. Sci., New York 258, No. 1, 1-12 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 163, 3-14 (2019).
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Threshold resonances and virtual levels in the spectrum of cylindrical and periodic waveguides. (English. Russian original) Zbl 1458.35031

Izv. Math. 84, No. 6, 1105-1160 (2020); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 84, No. 6, 73-130 (2020).
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Hybrid normed ideal perturbations of \(n\)-tuples of operators. II: Weak wave operators. (English) Zbl 1455.47029

Curto, Raul E. (ed.) et al., Operator theory, operator algebras and their interactions with geometry and topology. Ronald G. Douglas memorial volume. Proceedings of the international workshop on operator theory and applications (IWOTA 2018), Shanghai, China, July 23–27, 2018. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 278, 501-510 (2020).
MSC:  47L30 47L20 47A13
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Sequence spaces. Topics in modern summability theory. (English) Zbl 1468.46003

Mathematics and its Applications: Modelling, Engineering, and Social Sciences. Boca Raton, FL: CRC Press (ISBN 978-0-367-81917-0/hbk; 978-1-032-17319-1/pbk; 978-1-003-01511-6/ebook). xx, 292 p. (2020).
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The Fučík spectrum as two regular curves. (English) Zbl 1450.34020

Area, Iván (ed.) et al., Nonlinear analysis and boundary value problems. NABVP 2018, Santiago de Compostela, Spain, September 4–7, 2018. Proceedings of the international conference. Dedicated to Juan J. Nieto on the occasion of his 60th birthday. Cham: Springer. Springer Proc. Math. Stat. 292, 177-198 (2019).
MSC:  34B08 34B09 34B10
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Surjectivity of Hadamard type operators on spaces of smooth functions. (English) Zbl 1437.46030

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Extended states for the Schrödinger operator with quasi-periodic potential in dimension two. (English) Zbl 1442.35003

Memoirs of the American Mathematical Society 1239. Providence, RI: American Mathematical Society (AMS) (ISBN 978-1-4704-3543-1/pbk; 978-1-4704-5069-4/ebook). v, 139 p. (2019).
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