Abstract
In this paper, we employ the fixed point index on cones to study the existence, multiplicity and nonexistence of positive periodic solutions to a system of infinite delay equations, chi;(t) = A(t) chi;(t) + lambda; f(t, chi; t)in which lambda; GT; 0 is a parameter. We prove some general theorems and establish new periodicity conditions for several population growth models.
| Original language | English (Ireland) |
|---|---|
| Number of pages | 19 |
| Journal | MATHEMATICAL MODELS & METHODS IN APPLIED SCIENCES |
| Volume | 15 |
| Publication status | Published - 1 Apr 2005 |
Authors (Note for portal: view the doc link for the full list of authors)
- Authors
- Jiang, DQ,O'Regan, D,Agarwal, RP,Xu, XJ