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Local and global Hopf bifurcation in a neutral population model with age structure

  • Daifeng Duan
  • , Ben Niu*
  • , Junjie Wei
  • *Corresponding author for this work
  • Harbin Institute of Technology
  • Harbin Institute of Technology Weihai

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, an age-structured population model with the form of neutral functional differential equation is studied. We discuss the stability of the positive equilibrium by analyzing the characteristic equation. Local Hopf bifurcation results are also obtained by choosing the mature delay as bifurcation parameter. On the center manifold, the normal form of the Hopf bifurcation is derived, and explicit formulae for determining the criticality of bifurcation are theoretically given. Moreover, the global continuation of Hopf bifurcating periodic solutions is investigated by using the global Hopf bifurcation theory of neutral equations. Finally, some numerical examples are carried out to support the main results.

Original languageEnglish
Pages (from-to)4747-4764
Number of pages18
JournalMathematical Methods in the Applied Sciences
Volume42
Issue number14
DOIs
StatePublished - 30 Sep 2019
Externally publishedYes

Keywords

  • Hopf bifurcation
  • age structure
  • global bifurcation
  • neutral type
  • population model

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