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Sufficient Condition on Positive Periodic Solution for Neutral Delay Model

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Author:
No author available
Journal Title:
JOURNAL OF BIOMATHEMATICS
Issue:
1
DOI:
10.3969/j.issn.1001-9626.2000.01.003
Key Word:
中立型;时滞;周期正解;拓扑度;Neutral type;Delay;Positive periodic solution;Topological degree

Abstract: A new sufficient conditions are derived for the existence of positive periodic solution ofneutral delay model of the formN′(t)=N(t)[ (t)- (t)N(t)-b(t)N(t- (t))-c(t)N′(t- (t))]where (t), (t), b(t), c(t), (t) are nonnegative continuous T-periodic functions, and the result in this paper answerthe open problem 9.2 in [1].

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