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arXiv · 0802.0852

Quaternion polar representation with a complex modulus and complex argument inspired by the Cayley-Dickson form

Stephen J. Sangwine·Nicolas Le Bihan
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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 amplitude and phase from an arbitrary quaternion in Cartesian form.

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Stephen J. Sangwine, Nicolas Le Bihan. 2008-02-22. Quaternion polar representation with a complex modulus and complex argument inspired by the Cayley-Dickson form. https://doi.org/10.1007/s00006-008-0128-1

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