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La Formule ρ = reι(φ+ιψ) interprétée géométriquement dans l’espace, de manière à prendre la forme d’un Quaternion. Par J. H. Peek, Docteur ès Sciences, conseiller actuariel de la Banque Royale d’Assurance à Amsterdam. (H. Eisendrath, Amsterdam, 1907.)
Published online by Cambridge University Press: 03 November 2016
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