TY  - JOUR
ID  - Moaaz2023
LB  - Moaaz2023
AU  - Moaaz, Osama
AU  - Anis, Mona
AU  - El-Deeb, Ahmed A.
AU  - Elshenhab, Ahmed M.
TI  - New oscillation constraints for even-order delay differential equations
ST  - New oscillation constraints for even-order delay differential equations
JO  - Opuscula Math.
JA  - Opuscula Math.
JF  - Opuscula Mathematica
PY  - 2023
VL  - 43
IS  - 3
SP  - 455
EP  - 467
DO  - https://doi.org/10.7494/OpMath.2023.43.3.455
UR  - https://doi.org/10.7494/OpMath.2023.43.3.455
AB  - 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.
KW  - delay differential equations
KW  - even-order
KW  - Kneser solutions
KW  - oscillation
SN  - 1232-9274
ER  -