New oscillation constraints for even-order delay differential equations

• Autorzy: Moaaz Osama , Anis Mona , El-Deeb Ahmed A. , Elshenhab Ahmed M.

Identyfikatory

DOI

10.7494/OpMath.2023.43.3.455

• Języki publikacji: EN

Abstrakty

EN

The purpose of this paper is to study the oscillatory properties of solutions to a class of delay differential equations of even order. We focus on criteria that exclude decreasing positive solutions. As in this paper, this type of solution emerges when considering the noncanonical case of even equations. By finding a better estimate of the ratio between the Kneser solution with and without delay, we obtain new constraints that ensure that all solutions to the considered equation oscillate. The new findings improve some previous findings in the literature.

Słowa kluczowe

EN

delay differential equations; even-order; Kneser solutions; oscillation

• Wydawca: AGH University of Science and Technology Press
• Czasopismo: Opuscula Mathematica
• Rocznik: 2023
• Tom: Vol. 43, no. 3
• Strony: 455--467
• Opis fizyczny: Bibliogr. 21 poz.

Twórcy

autor

Moaaz Osama

• Department of Mathematics, College of Science, Qassim University, P.O. Box 6644, Buraydah 51452, Saudi Arabia
• Department of Mathematics, Faculty of Science, Mansoura University, 35516 Mansoura, Egypt

• https://orcid.org/0000-0003-3850-1022

autor

Anis Mona

• Department of Mathematics, Faculty of Science, Mansoura University, 35516 Mansoura, Egypt

• https://orcid.org/0000-0002-7288-9553

autor

El-Deeb Ahmed A.

• Department of Mathematics, Faculty of Science, Al-Azhar University, Nasr City 11884, Cairo, Egypt

• https://orcid.org/0000-0001-9916-0239

autor

Elshenhab Ahmed M.

• School of Mathematics, Harbin Institute of Technology, Harbin 150001, China

• https://orcid.org/0000-0003-3574-2939

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)