Quaternion Polar Representation with a Complex Modulus and Complex Argument Inspired by the Cayley-Dickson Form |
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Authors: | Stephen J Sangwine Nicolas Le Bihan |
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Institution: | 1. Department of Computing and Electronic Systems, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, United Kingdom 2. Département Images et Signal, Gipsa-lab UMR 5216, 961 Rue de la Houille Blanche, Domaine Universitaire, BP 46, 38402, Saint Martin d’Héres Cedex, France
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Abstract: | We present a new polar representation of quaternions inspired by the Cayley-Dickson representation. In this new polar representation,
a quaternion is represented by a pair of complex numbers as in the Cayley-Dickson form, but here these two complex numbers
are a complex ‘modulus’ and a complex ‘argument’. As in the Cayley-Dickson form, the two complex numbers are in the same complex
plane (using the same complex root of −1), but the complex phase is multiplied by a different complex root of −1 in the exponential
function. We show how to calculate the ‘modulus’ and ‘argument’ from an arbitrary quaternion in Cartesian form. |
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