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Found 14,666 Documents (Results 1–100)

A nonlinear damped transmission problem as limit of wave equations with concentrating nonlinear terms away from the boundary. (English) Zbl 07804837

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Asymptotic spectral properties and preconditioning of an approximated nonlocal Helmholtz equation with Caputo fractional Laplacian and variable coefficient wave number \(\mu\). arXiv:2402.10569

Preprint, arXiv:2402.10569 [math.NA] (2024).
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Optimally truncated WKB approximation for the 1D stationary Schrödinger equation in the highly oscillatory regime. arXiv:2401.10141

Preprint, arXiv:2401.10141 [math.NA] (2024).
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A finite difference scheme for two-dimensional singularly perturbed convection-diffusion problem with discontinuous source term. arXiv:2401.02331

Preprint, arXiv:2401.02331 [math.NA] (2024).
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Structure-preserving model order reduction of Hamiltonian systems. (English) Zbl 07822585

Beliaev, Dmitry (ed.) et al., International congress of mathematicians 2022, ICM 2022, Helsinki, Finland, virtual, July 6–14, 2022. Volume 7. Sections 15–20. Berlin: European Mathematical Society (EMS). 5072-5097 (2023).
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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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The problem in the unbounded domain with the Frankl condition on the segment of the degeneration line and with a missing Gellerstedt condition for a class of mixed-type equations. (English. Russian original) Zbl 07806522

Russ. Math. 67, No. 8, 18-26 (2023); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2023, No. 8, 35-44 (2023).
MSC:  35M12 35A02
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On a functional equation with holomorphic coefficients associated with a finite group. (English. Russian original) Zbl 07806520

Russ. Math. 67, No. 8, 1-6 (2023); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2023, No. 8, 3-9 (2023).
MSC:  30Exx 39Axx 45Exx
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