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Nonreal Zeros of Polynomials in a Polynomial Sequence Satisfying a Three-Term Recurrence Relation
Stockholm University, Faculty of Science, Department of Mathematics.
Number of Authors: 12021 (English)In: Journal of contemporary mathematical analysis (Armenian academy of sciences), ISSN 1068-3623, Vol. 56, no 2, p. 87-93Article in journal (Refereed) Published
Abstract [en]

This paper discusses the location of zeros of polynomials in a polynomial sequence {Pn(z)}∞n=1 generated by a three-term recurrence relation of the form Pn(z)+B(z)Pn−1(z)+A(z)Pn−k(z)=0 with k>2 and the standard initial conditions P0(z)=1, P−1(z)=P−k+1(z)=0, where A(z) and B(z) are arbitrary coprime real polynomials. We show that there always exist polynomials in {Pn(z)}∞n=1 with nonreal zeros.

Place, publisher, year, edition, pages
2021. Vol. 56, no 2, p. 87-93
Keywords [en]
recurrence relation, hyperbolic polynomials, discriminant
National Category
Mathematics
Identifiers
URN: urn:nbn:se:su:diva-195653DOI: 10.3103/S1068362321020072ISI: 000649735500004OAI: oai:DiVA.org:su-195653DiVA, id: diva2:1587985
Available from: 2021-08-26 Created: 2021-08-26 Last updated: 2022-02-25Bibliographically approved

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Ndikubwayo, Innocent

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