Two examples on the convergence of certain rank-2 minimization methods for quadratic functionals in Hilbert space |
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Authors: | J Stoer |
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Institution: | Institut für Angewandte Mathematik und Statistik der Universität Würzburg Am Hubland 8700 Würzburg, West Germany |
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Abstract: | Two simple examples are given showing that the usual rank-2 algorithms for minimizing functionals on a real Hilbert space H may converge only linearly and in particular bad cases only sublinearly, even for quadratic ?. |
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