Discrete variable methods for delay-differential equations with threshold-type delays

Zdzislaw Jackiewicz, B. Zubik-Kowal

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


We study numerical solution of systems of delay-differential equations in which the delay function, which depends on the unknown solution, is defined implicitly by the threshold condition. We study discrete variable numerical methods for these problems and present error analysis. The global error is composed of the error of solving the differential systems, the error from the threshold conditions and the errors in delay arguments. Our theoretical analysis is confirmed by numerical experiments on threshold problems from the theory of epidemics and from population dynamics.

Original languageEnglish (US)
Pages (from-to)514-523
Number of pages10
JournalJournal of Computational and Applied Mathematics
Issue number2
StatePublished - Jun 15 2009


  • Delay-differential systems
  • Error analysis
  • Numerical approximations
  • Threshold conditions

ASJC Scopus subject areas

  • Computational Mathematics
  • Applied Mathematics


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