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Found 149 Documents (Results 1–100)

Eigenfunctions of negative spectrum for the Schrödinger operator in a half-plane having singular potential on a half-line and with Neumann boundary condition. (English. Russian original) Zbl 07798763

J. Math. Sci., New York 277, No. 4, 628-645 (2023); translation from Zap. Nauchn. Semin. POMI 493, 232-258 (2020).
MSC:  47Axx 35Jxx 35Qxx
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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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Fredholm theory of differential operators on periodic graphs. (English) Zbl 1482.81018

Bonetto, Federico (ed.) et al., Mathematical problems in quantum physics. QMATH13: Conference on mathematical results in quantum physics, Georgia Institute of Technology, Atlanta, GA, USA, October 8–11, 2016. Proceedings. Providence, RI: American Mathematical Society (AMS). Contemp. Math. 717, 173-186 (2018).
MSC:  81Q35 34B45 47A10
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Bargmann type estimates of the counting function for general Schrödinger operators. (English. Russian original) Zbl 1280.47029

J. Math. Sci., New York 184, No. 4, 457-508 (2012); translation from Probl. Mat. Anal. 65, 77-118 (2012).
MSC:  47A75 47J10 49R05
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On spectral estimates for Schrödinger-type operators: the case of small local dimension. (English. Russian original) Zbl 1272.47055

Funct. Anal. Appl. 44, No. 4, 259-269 (2010); translation from Funkts. Anal. Prilozh. 44, No. 4, 21-33 (2010).
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On the existence of a variational principle for an operator equation with second derivative with respect to “time”. (English) Zbl 1123.47050

Math. Notes 80, No. 1, 83-90 (2006); translation from Mat. Zametki 80, No. 1, 87-94 (2006).
MSC:  47J35 47H50 34B15
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