A finite dimensional analog of the Krein formula

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dc.creatorShereshevskii, I. A.
dc.date2002-09-25
dc.date.accessioned2026-07-07T04:29:27Z
dc.date.available2026-07-07T04:29:27Z
dc.descriptionI offer a simple and useful formula for the resolvent of a small rank perturbation of large matrices. I discuss applications of this formula, in particular, to analytical and numerical solving of difference boundary value problems. I present examples connected with such problems for the difference Laplacian and estimate numerical efficiency of the corresponding algorithms.
dc.descriptionarXiv version is already official
dc.identifierhttps://arxiv.org/abs/math-ph/0209055
dc.identifierhttp://arxiv.org/abs/math-ph/0209055
dc.identifierJ. Nonlinear Math. Phys. 8 (2001) no. 4, 446-457
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/57160
dc.subjectMathematical Physics
dc.subjectAnalysis of PDEs
dc.titleA finite dimensional analog of the Krein formula
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