{"title":"Oscillation criteria for the second-order neutral advanced dynamic equations on time scales","authors":"Ying Sui","doi":"10.1016/j.aml.2025.109543","DOIUrl":null,"url":null,"abstract":"<div><div>In this paper, we consider the oscillation of second-order neutral advanced dynamic equations on time scales of the form <span><math><mrow><msup><mrow><mrow><mo>(</mo><mi>r</mi><mrow><mo>(</mo><mi>t</mi><mo>)</mo></mrow><msup><mrow><mrow><mo>(</mo><msup><mrow><mi>z</mi></mrow><mrow><mi>Δ</mi></mrow></msup><mrow><mo>(</mo><mi>t</mi><mo>)</mo></mrow><mo>)</mo></mrow></mrow><mrow><mi>α</mi></mrow></msup><mo>)</mo></mrow></mrow><mrow><mi>Δ</mi></mrow></msup><mo>+</mo><mi>q</mi><mrow><mo>(</mo><mi>t</mi><mo>)</mo></mrow><mi>f</mi><mrow><mo>(</mo><mi>y</mi><mrow><mo>(</mo><mi>m</mi><mrow><mo>(</mo><mi>t</mi><mo>)</mo></mrow><mo>)</mo></mrow><mo>)</mo></mrow><mo>=</mo><mn>0</mn><mo>,</mo></mrow></math></span> where <span><math><mrow><mi>z</mi><mrow><mo>(</mo><mi>t</mi><mo>)</mo></mrow><mo>=</mo><mi>y</mi><mrow><mo>(</mo><mi>t</mi><mo>)</mo></mrow><mo>+</mo><mi>p</mi><mrow><mo>(</mo><mi>t</mi><mo>)</mo></mrow><mi>y</mi><mrow><mo>(</mo><mi>τ</mi><mrow><mo>(</mo><mi>t</mi><mo>)</mo></mrow><mo>)</mo></mrow></mrow></math></span> and <span><math><mrow><mi>m</mi><mrow><mo>(</mo><mi>t</mi><mo>)</mo></mrow><mo>≥</mo><mi>t</mi></mrow></math></span>. We consider two cases of <span><math><mrow><mi>τ</mi><mrow><mo>(</mo><mi>t</mi><mo>)</mo></mrow><mo>≥</mo><mi>t</mi></mrow></math></span> and <span><math><mrow><mi>τ</mi><mrow><mo>(</mo><mi>t</mi><mo>)</mo></mrow><mo>≤</mo><mi>t</mi></mrow></math></span>, respectively. Some new oscillatory results are based on the new comparison theorems that enable us to reduce problem of the oscillation of the second-order equations to the oscillation of the first-order equations.</div></div>","PeriodicalId":55497,"journal":{"name":"Applied Mathematics Letters","volume":"166 ","pages":"Article 109543"},"PeriodicalIF":2.9000,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Mathematics Letters","FirstCategoryId":"100","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S089396592500093X","RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, we consider the oscillation of second-order neutral advanced dynamic equations on time scales of the form where and . We consider two cases of and , respectively. Some new oscillatory results are based on the new comparison theorems that enable us to reduce problem of the oscillation of the second-order equations to the oscillation of the first-order equations.
期刊介绍:
The purpose of Applied Mathematics Letters is to provide a means of rapid publication for important but brief applied mathematical papers. The brief descriptions of any work involving a novel application or utilization of mathematics, or a development in the methodology of applied mathematics is a potential contribution for this journal. This journal''s focus is on applied mathematics topics based on differential equations and linear algebra. Priority will be given to submissions that are likely to appeal to a wide audience.