Semicycles and correlated asymptotics of oscillatory solutions to second-order delay differential equations

Elena Braverman, Alexander Domoshnitsky, John Ioannis Stavroulakis

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We obtain several new comparison results on the distance between zeros and local extrema of solutions for the second order delay differential equation x(t)+p(t)x(t−τ(t))=0,t≥swhere τ:R→[0,+∞), p:R→R are Lebesgue measurable and uniformly essentially bounded, including the case of a sign-changing coefficient. We are thus able to calculate upper bounds on the semicycle length, which guarantee that an oscillatory solution is bounded or even tends to zero. Using the estimates of the distance between zeros and extrema, we investigate the classification of solutions in the case p(t)≤0,t∈R.

Original languageEnglish
Article number127875
JournalJournal of Mathematical Analysis and Applications
Volume531
Issue number2
DOIs
StatePublished - 15 Mar 2024

Keywords

  • Comparison theorems
  • Delay
  • Oscillation
  • Second-order delay equations
  • Semicycle

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