Instability to Nonlinear Vector Differential Equations of Fourth Order with Constant Delay

Tunc C.

SAINS MALAYSIANA, vol.42, no.7, pp.999-1002, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 42 Issue: 7
  • Publication Date: 2013
  • Journal Name: SAINS MALAYSIANA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.999-1002
  • Van Yüzüncü Yıl University Affiliated: Yes


We consider a vector nonlinear differential equation of fourth order with a constant delay. We establish new sufficient conditions, which guarantee the instability of the zero solution of that equation. An example is given to illustrate the theoretical analysis made in this paper.