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Found 4,201 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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Direct and inverse spectral theorems for a class of canonical systems with two singular endpoints. (English) Zbl 07817180

Binder, Ilia (ed.) et al., Function spaces, theory and applications. Selected papers based on the presentations at the workshop, Toronto, Canada, July 1 – December 31, 2021. Cham: Springer. Fields Inst. Commun. 87, 105-205 (2023).
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Optimization spectral problem for the Sturm-Liouville operator in a vector function space. (English. Russian original) Zbl 07812323

Dokl. Math. 108, No. 2, 406-410 (2023); translation from Dokl. Ross. Akad. Nauk, Mat. Inform. Protsessy Upr. 513, 93-98 (2023).
MSC:  34A55 34B24 34L40
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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 40-XX 34A05
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Cauchy problem for the nonlinear Hirota equation in the class of periodic infinite-zone functions. (English. Russian original) Zbl 07766048

St. Petersbg. Math. J. 34, No. 5, 821-845 (2023); translation from Algebra Anal. 34, No. 5, 139-172 (2022).
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Asymptotics of the solution of an initial-boundary value problem for the one-dimensional Klein-Gordon equation on the half-line. (English. Russian original) Zbl 07761793

Math. Notes 114, No. 4, 608-618 (2023); translation from Mat. Zametki 114, No. 4, 602-614 (2023).
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On the bifurcation of thresholds of the essential spectrum with a spectral singularity. (English. Russian original) Zbl 1527.81055

Differ. Equ. 59, No. 2, 278-282 (2023); translation from Differ. Uravn. 59, No. 2, 270-274 (2023).
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Laplacians on infinite graphs. (English) Zbl 1521.05002

Memoirs of the European Mathematical Society 3. Berlin: European Mathematical Society (EMS) (ISBN 978-3-98547-025-9/pbk; 978-3-98547-525-4/ebook). viii, 232 p. (2023).
Reviewer: Shuchao Li (Wuhan)
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