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Anwendungen des Quotienten-Differenzen-Algorithmus

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Der Quotienten-Differenzen-Algorithmus

Zusammenfassung

Ist eine im Unendlichen reguläre Funktion

$$ % MathType!MTEF!2!1!+- % feaagaart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaaeaaaaaaaaa8 % qadaaeWbWdaeaapeWaaSaaa8aabaWdbiaadohapaWaaSbaaSqaa8qa % caWG4baapaqabaaakeaapeGaamOEa8aadaahaaWcbeqaa8qacaWG4b % Gaey4kaSIaaGymaaaaaaGccaaMc8Uaeyypa0JaaGPaVlaadAgacaGG % OaGaamOEaiaacMcaaSWdaeaapeGaaGimaaWdaeaapeGaeyOhIukani % abggHiLdaaaa!48BD! \sum\limits_0^\infty {\frac{{s_x }} {{z^{x + 1} }}\, = \,f(z)} $$
((1))

gegeben, so kann man aus dem QD-Schema der Koeffizienten nach (I, 9) unmittelbar die für die Aufstellung des S-Kettenbruches notwendigen Grössen ablesen; es ist nämlich

$$ % MathType!MTEF!2!1!+- % feaagaart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX % garmWu51MyVXgaruWqVvNCPvMCG4uz3bqefqvATv2CG4uz3bIuV1wy % Ubqee0evGueE0jxyaibaieYlf9irVeeu0dXdh9vqqj-hEeeu0xXdbb % a9frFj0-OqFfea0dXdd9vqaq-JfrVkFHe9pgea0dXdar-Jb9hs0dXd % bPYxe9vr0-vr0-vqpWqaaeaabiGaciaacaqabeaadaabauaaaOqaaa % baaaaaaaaapeGaamOzaiaacIcacaWG6bGaaiykaiaaykW7cqGH9aqp % caaMc8+aaSaaa8aabaWdbmaaeiaapaqaa8qacaWGZbWdamaaBaaale % aapeGaaGimaaWdaeqaaaGcpeGaayjcSdaapaqaa8qadaabbaWdaeaa % peGaamOEaaGaay5bSdaaaiaaykW7cqGHsislcaaMc8+aaSaaa8aaba % Wdbmaaeiaapaqaa8qacaWGXbWdamaaDaaaleaapeGaaGymaaWdaeaa % peGaaiikaiaaicdacaGGPaaaaaGccaGLiWoaa8aabaWdbmaaeeaapa % qaa8qacaaIXaaacaGLhWoaaaGaaGPaVlabgkHiTiaaykW7daWcaaWd % aeaapeWaaqGaa8aabaWdbiaadwgapaWaa0baaSqaa8qacaaIXaaapa % qaa8qacaGGOaGaaGimaiaacMcaaaaakiaawIa7aaWdaeaapeWaaqqa % a8aabaWdbiaadQhaaiaawEa7aaaacaaMc8UaeyOeI0IaaGPaVpaala % aapaqaa8qadaabcaWdaeaapeGaamyCa8aadaqhaaWcbaWdbiaaikda % a8aabaWdbiaacIcacaaIWaGaaiykaaaaaOGaayjcSdaapaqaa8qada % abbaWdaeaapeGaaGymaaGaay5bSdaaaiaaykW7cqGHsislcaaMc8+a % aSaaa8aabaWdbmaaeiaapaqaa8qacaWGLbWdamaaDaaaleaapeGaaG % OmaaWdaeaapeGaaiikaiaaicdacaGGPaaaaaGccaGLiWoaa8aabaWd % bmaaeeaapaqaa8qacaWG6baacaGLhWoaaaGaaGPaVlabgkHiTiaayk % W7cqGHMacVcaaMc8UaaiOlaaaa!813E! f(z)\, = \,\frac{{\left. {s_0 } \right|}} {{\left| z \right.}}\, - \,\frac{{\left. {q_1^{(0)} } \right|}} {{\left| 1 \right.}}\, - \,\frac{{\left. {e_1^{(0)} } \right|}} {{\left| z \right.}}\, - \,\frac{{\left. {q_2^{(0)} } \right|}} {{\left| 1 \right.}}\, - \,\frac{{\left. {e_2^{(0)} } \right|}} {{\left| z \right.}}\, - \, \ldots \,. $$
((2))

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Rutishauser, H. (1957). Anwendungen des Quotienten-Differenzen-Algorithmus. In: Der Quotienten-Differenzen-Algorithmus. Mitteilungen aus dem Institut für angewandte Mathematik. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-7175-4_3

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  • DOI: https://doi.org/10.1007/978-3-0348-7175-4_3

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