Positive periodic solutions of a discrete mutualism model with time delays. (English) Zbl 1081.92042

Li, Yongkun

Int. J. Math. Math. Sci. 2005, No. 4, 499-506 (2005).

Summary: A discrete periodic mutualism model with time delays is investigated. By using R. E. Gaines and J. L. Mawhin’s continuation theorem of coincidence degree theory [Coincidence degree, and nonlinear differential equations. (1977; Zbl 0339.47031)], the existence of positive periodic solutions of the model is established.

MSC:

92D40	Ecology
34K13	Periodic solutions to functional-differential equations
34K60	Qualitative investigation and simulation of models involving functional-differential equations

Citations:

Zbl 0339.47031