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Remarks with regard to treatises on quaternion matrices by Th.B. van Wettum. (Q1528699)

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scientific article; zbMATH DE number 2684806
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English
Remarks with regard to treatises on quaternion matrices by Th.B. van Wettum.
scientific article; zbMATH DE number 2684806

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    Remarks with regard to treatises on quaternion matrices by Th.B. van Wettum. (English)
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    1893
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    In den beiden vorhergehenden Bänden des Nieuw Archief hat Herr van Wettum einige Betrachtungen über Matrices angestellt und damit mehrere Einwürfe wider die Theorie der Quaternionen erhoben. Der Verfasser zeigt, dass Hr. van Wettum aus seinen richtigen Formeln unrichtige Schlüsse gezogen hat, wie schon zum Teil F. d. M. XXIII. 1891. 78 (siehe JFM 23.0077.01) angegeben worden ist. Weiter wird aufs neue der Ausdruck für die Matrix einer konischen Drehung hergeleitet und die Uebereinstimmung mit dem für denselben Fall gültigen Ausdruck in der Theorie der Quaternionen nachgewiesen.
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