Oscillation criteria for general third-order delay dynamic equations

Abstract The goal of this work is to establish new criteria for oscillation of all solutions to a general third-order functional dynamic equation on time scales of the form $$\begin{aligned} \left( r_{2}(\nu )\left[ \left( r_{1}(\nu )\left( y^{\Delta }(\nu )\right) ^{\alpha _{1}}\right) ^{\Delta }\right] ^{\alpha _{2}}\right) ^{\Delta }+q(\nu ) y^{\beta }(\tau (\nu ))=0. \end{aligned}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mtable> <mml:mtr> <mml:mtd> <mml:mrow> <mml:msup> <mml:mfenced> <mml:msub> <mml:mi>r</mml:mi> <mml:mn>2</mml:mn> </mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>ν</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> <mml:msup> <mml:mfenced> <mml:msup> <mml:mfenced> <mml:msub> <mml:mi>r</mml:mi> <mml:mn>1</mml:mn> </mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>ν</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> <mml:msup> <mml:mfenced> <mml:msup> <mml:mi>y</mml:mi> <mml:mi>Δ</mml:mi> </mml:msup> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>ν</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:mfenced> <mml:msub> <mml:mi>α</mml:mi> <mml:mn>1</mml:mn> </mml:msub> </mml:msup> </mml:mfenced> <mml:mi>Δ</mml:mi> </mml:msup> </mml:mfenced> <mml:msub> <mml:mi>α</mml:mi> <mml:mn>2</mml:mn> </mml:msub> </mml:msup> </mml:mfenced> <mml:mi>Δ</mml:mi> </mml:msup> <mml:mo>+</mml:mo> <mml:mi>q</mml:mi> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>ν</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> <mml:msup> <mml:mi>y</mml:mi> <mml:mi>β</mml:mi> </mml:msup> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>τ</mml:mi> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>ν</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> <mml:mo>)</mml:mo> </mml:mrow> <mml:mo>=</mml:mo> <mml:mn>0</mml:mn> <mml:mo>.</mml:mo> </mml:mrow> </mml:mtd> </mml:mtr> </mml:mtable> </mml:mrow> </mml:math> The used approach mainly employs comparison principles with first-order dynamic equations and the Riccati-type substitution technique. The results are illustrated by three examples.

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Publication Details

Journal
Qualitative Theory of Dynamical Systems
Published
2025-04-01
DOI
https://doi.org/10.1007/s12346-025-01259-1
Citations
2
Primary Topic
Nonlinear Differential Equations Analysis
Type
article
Field-Weighted Citation Impact
7.45

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article

Oscillation criteria for general third-order delay dynamic equations

Said R. Grace, G. N. Chhatria, Irena Jadlovská
2 citations
Qualitative Theory of Dynamical Systems
Nonlinear Differential Equations Analysis
7.45
article

Oscillation criteria for general third-order delay dynamic equations

Said R. Grace, G. N. Chhatria, Irena Jadlovská
article en
2 citations

Abstract

Abstract The goal of this work is to establish new criteria for oscillation of all solutions to a general third-order functional dynamic equation on time scales of the form $$\begin{aligned} \left( r_{2}(\nu )\left[ \left( r_{1}(\nu )\left( y^{\Delta }(\nu )\right) ^{\alpha _{1}}\right) ^{\Delta }\right] ^{\alpha _{2}}\right) ^{\Delta }+q(\nu ) y^{\beta }(\tau (\nu ))=0. \end{aligned}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mtable> <mml:mtr> <mml:mtd> <mml:mrow> <mml:msup> <mml:mfenced> <mml:msub> <mml:mi>r</mml:mi> <mml:mn>2</mml:mn> </mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>ν</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> <mml:msup> <mml:mfenced> <mml:msup> <mml:mfenced> <mml:msub> <mml:mi>r</mml:mi> <mml:mn>1</mml:mn> </mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>ν</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> <mml:msup> <mml:mfenced> <mml:msup> <mml:mi>y</mml:mi> <mml:mi>Δ</mml:mi> </mml:msup> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>ν</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:mfenced> <mml:msub> <mml:mi>α</mml:mi> <mml:mn>1</mml:mn> </mml:msub> </mml:msup> </mml:mfenced> <mml:mi>Δ</mml:mi> </mml:msup> </mml:mfenced> <mml:msub> <mml:mi>α</mml:mi> <mml:mn>2</mml:mn> </mml:msub> </mml:msup> </mml:mfenced> <mml:mi>Δ</mml:mi> </mml:msup> <mml:mo>+</mml:mo> <mml:mi>q</mml:mi> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>ν</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> <mml:msup> <mml:mi>y</mml:mi> <mml:mi>β</mml:mi> </mml:msup> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>τ</mml:mi> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>ν</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> <mml:mo>)</mml:mo> </mml:mrow> <mml:mo>=</mml:mo> <mml:mn>0</mml:mn> <mml:mo>.</mml:mo> </mml:mrow> </mml:mtd> </mml:mtr> </mml:mtable> </mml:mrow> </mml:math> The used approach mainly employs comparison principles with first-order dynamic equations and the Riccati-type substitution technique. The results are illustrated by three examples.

Qualitative Theory of Dynamical SystemsVol. 24(3)
Cairo University (EG), Vignan's Foundation for Science, Technology & Research (IN), Slovak Academy of Sciences (SK)
Slovenská Akadémia Vied, Ministerstvo školstva, vedy, výskumu a športu Slovenskej republiky, Agentúra na Podporu Výskumu a Vývoja
Openalex Percentile: Top 4%
Nonlinear Differential Equations Analysis
7.45
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