Global Positive Periodic Solutions of Generalized n‐Species Competition Systems with Multiple Delays and Impulses
Zhenguo Luo and
Liping Luo
Abstract and Applied Analysis, 2013, vol. 2013, issue 1
Abstract:
By applying the fixed point theorem in a cone of Banach space, we obtain an easily verifiable necessary and sufficient condition for the existence of positive periodic solutions of two kinds of generalized n‐species competition systems with multiple delays and impulses as follows: xi′(t)=xi(t)[ai(t)-bi(t)xi(t)-∑j=1ncij(t)xi(t-τij(t))-∑j=1ndij(t)xj(t-γij(t))-∑j=1neij(t)∫-σij0 fij(s)xj(t+s)ds], a.e., t>0,t≠tk, k∈Z+, i=1,21,21,21,2,…,n; xi(tk+)-xi(tk-)=θikxi(tk), i=,…,n, k∈Z+; and xi′(t)=xi(t)[ai(t)-bi(t)xi(t)+∑j=1ncij(t)xi(t-τij(t))-∑j=1ndij(t)xj(t-γij(t))-∑j=1neij(t)∫-σij0 fij(s)xj(t+s)ds], a.e., t>0, t≠tk, k∈Z+, i=,…,n; xi(tk+)-xi(tk-)=θikxi(tk), i=,…,n, k∈Z+. It improves and generalizes a series of the well‐known sufficiency theorems in the literature about the problems mentioned previously.
Date: 2013
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https://doi.org/10.1155/2013/980974
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Persistent link: https://EconPapers.repec.org/RePEc:wly:jnlaaa:v:2013:y:2013:i:1:n:980974
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