Abstract
In this paper we revisit the ring of (left) one-sided quaternionic polynomials with special focus on its zero structure. This area of research has attracted the attention of several authors and therefore it is natural to develop computational tools for working in this setting. The main contribution of this paper is a Mathematica collection of functions QPolynomial for solving polynomial problems that we frequently find in applications.
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Notes
- 1.
In such case, it can be proved that all quaternions in [q] are in fact zeros of P and therefore the choice of the term spherical to designate this type of zeros is natural.
- 2.
In [2], such a chain was called a spherical chain.
- 3.
More precisely, q is a mixed zero of P if \(m_P([q])>0\) and \(m_P(q)> m_P(q')\), for all \(q'\in [q]\).
- 4.
In [2] the same problem is also addressed and one can find a particular (different) choice of \(\tilde{x}_l\) (\(l=2,\dots ,n\)) and \( y_l\) (\(l=2,\dots ,m\)).
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Acknowledgments
Research at CMAT was financed by Portuguese funds through Fundação para a Ciência e a Tecnologia, within the Project UID/MAT/00013/2013. Research at NIPE was carried out within the funding with COMPETE reference number POCI-01-0145-FEDER-006683 (UID/ECO/ 03182/2013), with the FCT/MEC’s (Fundação para a Ciência e a Tecnologia, I.P.) financial support through national funding and by the ERDF through the Operational Programme on “Competitiveness and Internationalization - COMPETE 2020" under the PT2020 Partnership Agreement.
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Falcão, M.I., Miranda, F., Severino, R., Soares, M.J. (2017). Mathematica Tools for Quaternionic Polynomials. In: Gervasi, O., et al. Computational Science and Its Applications – ICCSA 2017. ICCSA 2017. Lecture Notes in Computer Science(), vol 10405. Springer, Cham. https://doi.org/10.1007/978-3-319-62395-5_27
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