Results 11 to 20 of about 14,986,562 (279)

Oscillation Criteria of Higher-order Neutral Differential Equations with Several Deviating Arguments

open access: yesMathematics, 2020
This work is concerned with the oscillatory behavior of solutions of even-order neutral differential equations. By using the technique of Riccati transformation and comparison principles with the second-order differential equations, we obtain a new ...
Osama Moaaz   +2 more
doaj   +2 more sources

Some New Oscillation Criteria of Even-Order Quasi-Linear Delay Differential Equations with Neutral Term

open access: yesMathematics, 2021
The neutral delay differential equations have many applications in the natural sciences, technology, and population dynamics. In this paper, we establish several new oscillation criteria for a kind of even-order quasi-linear neutral delay differential ...
Rongrong Guo, Qingdao Huang, Qingmin Liu
doaj   +2 more sources

On the Positive Decreasing Solutions of Half-Linear Delay Differential Equations of Even Order

open access: yesMathematics, 2023
In this paper, we derive new properties for the decreasing positive solutions of half-linear delay differential equations of even order. The positive-decreasing solutions have a great influence on the study of qualitative properties, which include ...
Ghada AlNemer   +3 more
doaj   +2 more sources

Higher-order finite-difference methods for partial differential equations [PDF]

open access: yes, 1997
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis develops two families of numerical methods, based upon rational approximations having distinct real poles, for solving first- and second-order ...
Cheema, Tasleem Akhter
core   +6 more sources

A family of difference schemes for fourth order parabolic partial differential equations [PDF]

open access: yes, 1983
A family of methods is developed for the numerical solution of fourth order parabolic partial differential equations in one- and two-space variables.
Khaliq, AQM, Twizell, EH
core   +4 more sources

Numerical methods for ordinary differential equations with applications to partial differential equations [PDF]

open access: yes, 1983
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The thesis develops a number of algorithms for the numerical solution of ordinary differential equations with applications to partial differential equations.
Khaliq, Abdul Qayyum Masud
core   +6 more sources

Oscillatory Properties of Solutions of Even-Order Differential Equations [PDF]

open access: yesSymmetry, 2020
This work is concerned with the oscillatory behavior of solutions of even-order neutral differential equations. By using Riccati transformation and the integral averaging technique, we obtain a new oscillation criteria. This new theorem complements and improves some known results from the literature.
Elmetwally M. Elabbasy   +3 more
openaire   +1 more source

A New Approach in the Study of Oscillation Criteria of Even-Order Neutral Differential Equations

open access: yesMathematics, 2020
Based on the comparison with first-order delay equations, we establish a new oscillation criterion for a class of even-order neutral differential equations. Our new criterion improves a number of existing ones. An illustrative example is provided.
Osama Moaaz   +2 more
doaj   +1 more source

Asymptotic Behavior of Solutions of Even-Order Advanced Differential Equations [PDF]

open access: yesMathematical Problems in Engineering, 2020
In this paper, we establish the qualitative behavior of the even-order advanced differential equationaυyκ−1υβ′+∑i=1jqiυgyηiυ=0, υ≥υ0. The results obtained are based on the Riccati transformation and the theory of comparison with first- and second-order equations.
Omar Bazighifan, Hijaz Ahmad
openaire   +2 more sources

New oscillation theorems for a class of even-order neutral delay differential equations

open access: yesAdvances in Difference Equations, 2021
In this work, we study the oscillatory behavior of even-order neutral delay differential equations υ n ( l ) + b ( l ) u ( η ( l ) ) = 0 $\upsilon ^{n}(l)+b(l)u(\eta (l))=0$ , where l ≥ l 0 $l\geq l_{0}$ , n ≥ 4 $n\geq 4$ is an even integer and υ = u + a
Mona Anis, Osama Moaaz
doaj   +1 more source

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