On the Study of Trigonometric Polynomials Using Strum Sequence

This article constructs trigonometric polynomials of the sine and cosine whose sums are nonnegative. As an application, those nonnegative trigonometric sums are used to study the geometric properties of complex polynomials in the unit disk. The Strum sequences are used to prove the main outcome.

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Main Authors: Saiful R. Mondal, Kottakkaran Sooppy Nisar, Thabet Abdeljawad
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:Journal of Mathematics
Online Access:http://dx.doi.org/10.1155/2020/7068176
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author Saiful R. Mondal
Kottakkaran Sooppy Nisar
Thabet Abdeljawad
author_facet Saiful R. Mondal
Kottakkaran Sooppy Nisar
Thabet Abdeljawad
author_sort Saiful R. Mondal
collection DOAJ
description This article constructs trigonometric polynomials of the sine and cosine whose sums are nonnegative. As an application, those nonnegative trigonometric sums are used to study the geometric properties of complex polynomials in the unit disk. The Strum sequences are used to prove the main outcome.
format Article
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institution Kabale University
issn 2314-4629
2314-4785
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publishDate 2020-01-01
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series Journal of Mathematics
spelling doaj-art-e8967aa2a4714393b43ecdbe86bcfc972025-02-03T01:20:21ZengWileyJournal of Mathematics2314-46292314-47852020-01-01202010.1155/2020/70681767068176On the Study of Trigonometric Polynomials Using Strum SequenceSaiful R. Mondal0Kottakkaran Sooppy Nisar1Thabet Abdeljawad2Department of Mathematics and Statistics, King Faisal University, Al-Hasa 31982, Saudi ArabiaDepartment of Mathematics, College of Arts and Science, Prince Sattam bin Abdulaziz University, Wadi Aldawaser, 11991, Saudi ArabiaDepartment of Mathematics and General Sciences, Prince Sultan University, P.O. Box 66833, Riyadh 11586, Saudi ArabiaThis article constructs trigonometric polynomials of the sine and cosine whose sums are nonnegative. As an application, those nonnegative trigonometric sums are used to study the geometric properties of complex polynomials in the unit disk. The Strum sequences are used to prove the main outcome.http://dx.doi.org/10.1155/2020/7068176
spellingShingle Saiful R. Mondal
Kottakkaran Sooppy Nisar
Thabet Abdeljawad
On the Study of Trigonometric Polynomials Using Strum Sequence
Journal of Mathematics
title On the Study of Trigonometric Polynomials Using Strum Sequence
title_full On the Study of Trigonometric Polynomials Using Strum Sequence
title_fullStr On the Study of Trigonometric Polynomials Using Strum Sequence
title_full_unstemmed On the Study of Trigonometric Polynomials Using Strum Sequence
title_short On the Study of Trigonometric Polynomials Using Strum Sequence
title_sort on the study of trigonometric polynomials using strum sequence
url http://dx.doi.org/10.1155/2020/7068176
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