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Found 5,021 Documents (Results 1–100)

On the construction of a variational principle for a certain class of differential-difference operator equations. (English. Russian original) Zbl 07798854

J. Math. Sci., New York 278, No. 1, 108-114 (2024); translation from Sovrem. Mat., Fundam. Napravl. 67, No. 2, 316-323 (2021).
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Invariant subspaces and eigenvalues of the three-particle discrete Schrödinger operators. (English. Russian original) Zbl 07806530

Russ. Math. 67, No. 9, 1-15 (2023); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2023, No. 9, 3-19 (2023).
MSC:  81Qxx 35Pxx 35Jxx
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Conditions for the existence of eigenvalues of a three-particle lattice model Hamiltonian. (English. Russian original) Zbl 07806510

Russ. Math. 67, No. 7, 1-8 (2023); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2023, No. 7, 3-12 (2023).
MSC:  81Qxx 47Nxx 47Axx
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Uniqueness results for solutions of continuous and discrete PDE. (English) Zbl 1526.35131

Hujdurović, Ademir (ed.) et al., European congress of mathematics. Proceedings of the 8th congress, 8ECM, Portorož, Slovenia, June 20–26, 2021. Berlin: European Mathematical Society (EMS). 325-336 (2023).
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Existence condition for the eigenvalue of a three-particle Schrödinger operator on a lattice. (English. Russian original) Zbl 1528.81145

Russ. Math. 67, No. 2, 1-22 (2023); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2023, No. 2, 3-25 (2023).
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