The existence of a positive periodic solution foru'(t) =u(t)[α(t)-1+β(t)/1+uk(t-τ(t))], t≥0is established. Some sufficient conditions are obtained for the periodic solution to be globally attractive.
We obtain new sufficient condition for the global attractivity of all solutions of the delay nonlinear bobwhite quail model We partly answer an open problem 11 in [2], improve and extend a known result in paper [4].
基金This work is supported by Science Foundation of Hunan Provincial Education Cominission.
文摘The existence of a positive periodic solution foru'(t) =u(t)[α(t)-1+β(t)/1+uk(t-τ(t))], t≥0is established. Some sufficient conditions are obtained for the periodic solution to be globally attractive.
文摘We obtain new sufficient condition for the global attractivity of all solutions of the delay nonlinear bobwhite quail model We partly answer an open problem 11 in [2], improve and extend a known result in paper [4].
