Ma, Shuang-HongSun, Jian-PingWang, Da-Bin2021-08-062021-08-062007-05-15Ma, S. H., Sun, J. P., & Wang, D. B. (2007). Existence of positive solutions for nonlinear dynamic systems with a parameter on a measure chain. <i>Electronic Journal of Differential Equations, 2007</i>(73), pp. 1-8.1072-6691https://hdl.handle.net/10877/14235In this paper, we consider the following dynamic system with parameter on a measure chain T, uiΔΔ(t) + λhi(t)ƒi(u1(σ(t)), u2(σ(t)),..., un(σ(t))) = 0, t ∈ [ɑ, b], ɑui(ɑ) - βu1Δ(ɑ) = 0, γui(σ(b)) + δuiΔ (σ(b)) = 0, where i = 1, 2,..., n. Using fixed point index theory, we find sufficient conditions the existence of positive solutions.Text8 pages1 file (.pdf)enAttribution 4.0 InternationalDynamic systemPositive solutionConeFixed pointMeasure chainArticle