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Found 14,666 Documents (Results 1–100)

Direct and inverse problems of spectral analysis for arbitrary-order differential operators with nonintegrable regular singularities. (English. Russian original) Zbl 07798858

J. Math. Sci., New York 278, No. 1, 194-205 (2024); translation from Sovrem. Mat., Fundam. Napravl. 67, No. 2, 408-421 (2021).
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Fredholm determinants, continued fractions, Jost and Evans functions for a Jacobi matrix associated with the 2D-Euler equations. arXiv:2401.14037

Preprint, arXiv:2401.14037 [math.SP] (2024).
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Floquet Isospectrality of the Zero Potential for Discrete Periodic Schrödinger Operators. arXiv:2401.09731

Preprint, arXiv:2401.09731 [math.SP] (2024).
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Transformation operator for the Schrödinger equation with additional exponential potential. (English. Russian original) Zbl 07806535

Russ. Math. 67, No. 9, 68-75 (2023); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2023, No. 9, 76-84 (2023).
MSC:  34Lxx 34Axx 34Bxx
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Reconstruction of the Schrödinger operator with a singular potential on half-line by its prescribed essential spectrum. (English. Russian original) Zbl 07805964

Mosc. Univ. Math. Bull. 78, No. 4, 203-206 (2023); translation from Vestn. Mosk. Univ., Ser. I 78, No. 4, 57-60 (2023).
MSC:  47Bxx 47Axx 81Qxx
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One-dimensional finite-gap Schrödinger operators as a limit of commuting difference operators. (English. Russian original) Zbl 07786649

Dokl. Math. 108, No. 1, 312-315 (2023); translation from Dokl. Ross. Akad. Nauk, Mat. Inform. Protsessy Upr. 512, 81-84 (2023).
MSC:  39A70 47B47
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