Olach, R. Observation of a feedback mechanism in a population model. (English) Zbl 0952.34054 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 41, No. 3-4, 539-544 (2000). Here, the author studies the influence of a feedback mechanism of the type \(1-N(\tau(t))/K\), where \(K\) is a constant, on fluctuations of a population density \(N(t)\) around the equilibrium via a constant \(\lambda\) in the following population model \[ N'(t)=rN(t)|1-N(\tau(t))/K|^\lambda\text{ sgn}[\ln(K/N(\tau(t))]. \] Reviewer: Marcos Lizana (Merida) Cited in 6 Documents MSC: 34K11 Oscillation theory of functional-differential equations 92D25 Population dynamics (general) Keywords:retarded differential equation; oscillation; nonoscillatory solution; population model PDFBibTeX XMLCite \textit{R. Olach}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 41, No. 3--4, 539--544 (2000; Zbl 0952.34054) Full Text: DOI