Oscillation criteria for linear difference equations with several variable delays

We obtain new sufficient criteria for the oscillation of all solutions of linear delay difference equations with several (variable) finite delays. Our results relax numerous well-known limes inferior-type oscillation criteria from the literature by letting the limes inferior be replaced by the limes...

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Main Authors: Vasileios Benekas, Ábel Garab, Ardak Kashkynbayev, Ioannis P. Stavroulakis
Format: Article
Language:English
Published: AGH Univeristy of Science and Technology Press 2021-09-01
Series:Opuscula Mathematica
Subjects:
Online Access:https://www.opuscula.agh.edu.pl/vol41/5/art/opuscula_math_4129.pdf
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author Vasileios Benekas
Ábel Garab
Ardak Kashkynbayev
Ioannis P. Stavroulakis
author_facet Vasileios Benekas
Ábel Garab
Ardak Kashkynbayev
Ioannis P. Stavroulakis
author_sort Vasileios Benekas
collection DOAJ
description We obtain new sufficient criteria for the oscillation of all solutions of linear delay difference equations with several (variable) finite delays. Our results relax numerous well-known limes inferior-type oscillation criteria from the literature by letting the limes inferior be replaced by the limes superior under some additional assumptions related to slow variation. On the other hand, our findings generalize an oscillation criterion recently given for the case of a constant, single delay.
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spelling doaj.art-6ac28fc11ca9405c94a55c8c774e56182022-12-21T18:59:01ZengAGH Univeristy of Science and Technology PressOpuscula Mathematica1232-92742021-09-01415613627https://doi.org/10.7494/OpMath.2021.41.5.6134129Oscillation criteria for linear difference equations with several variable delaysVasileios Benekas0https://orcid.org/0000-0001-9693-1499Ábel Garab1https://orcid.org/0000-0001-9693-1923Ardak Kashkynbayev2https://orcid.org/0000-0002-1338-2058Ioannis P. Stavroulakis3https://orcid.org/0000-0002-4810-0540Department of Mathematics, University of Ioannina, 45110 Ioannina, GreeceDepartment of Mathematics, University of Klagenfurt, Universitätsstraße 65-67, A-9020 Klagenfurt, AustriaDepartment of Mathematics, Nazarbayev University, Qabanbay Batyr Avenue, 53, 010000 Nur-Sultan, KazakhstanDepartment of Mathematics, University of Ioannina, 45110 Ioannina, GreeceWe obtain new sufficient criteria for the oscillation of all solutions of linear delay difference equations with several (variable) finite delays. Our results relax numerous well-known limes inferior-type oscillation criteria from the literature by letting the limes inferior be replaced by the limes superior under some additional assumptions related to slow variation. On the other hand, our findings generalize an oscillation criterion recently given for the case of a constant, single delay.https://www.opuscula.agh.edu.pl/vol41/5/art/opuscula_math_4129.pdfoscillationdifference equationsseveral delaysnon-monotone argumentslowly varying function
spellingShingle Vasileios Benekas
Ábel Garab
Ardak Kashkynbayev
Ioannis P. Stavroulakis
Oscillation criteria for linear difference equations with several variable delays
Opuscula Mathematica
oscillation
difference equations
several delays
non-monotone argument
slowly varying function
title Oscillation criteria for linear difference equations with several variable delays
title_full Oscillation criteria for linear difference equations with several variable delays
title_fullStr Oscillation criteria for linear difference equations with several variable delays
title_full_unstemmed Oscillation criteria for linear difference equations with several variable delays
title_short Oscillation criteria for linear difference equations with several variable delays
title_sort oscillation criteria for linear difference equations with several variable delays
topic oscillation
difference equations
several delays
non-monotone argument
slowly varying function
url https://www.opuscula.agh.edu.pl/vol41/5/art/opuscula_math_4129.pdf
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AT abelgarab oscillationcriteriaforlineardifferenceequationswithseveralvariabledelays
AT ardakkashkynbayev oscillationcriteriaforlineardifferenceequationswithseveralvariabledelays
AT ioannispstavroulakis oscillationcriteriaforlineardifferenceequationswithseveralvariabledelays