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- W4287331314 abstract "In this article, we consider a class of finite rank perturbations of Toeplitz operators that have simple eigenvalues on the unit circle. Under a suitable assumption on the behavior of the essential spectrum, we show that such operators are power bounded. The problem originates in the approximation of hyperbolic partial differential equations with boundary conditions by means of finite difference schemes. Our result gives a positive answer to a conjecture by Trefethen, Kreiss and Wu that only a weak form of the so-called Uniform Kreiss-Lopatinskii Condition is sufficient to imply power boundedness." @default.
- W4287331314 created "2022-07-25" @default.
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- W4287331314 date "2023-01-01" @default.
- W4287331314 modified "2023-10-12" @default.
- W4287331314 title "Sharp stability for finite difference approximations of hyperbolic equations with boundary conditions" @default.
- W4287331314 hasPublicationYear "2023" @default.
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