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Four positive periodic solutions for the first order differential system

✍ Scribed by Zhengqiu Zhang; Hengsheng Tang

Book ID
108175735
Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
156 KB
Volume
332
Category
Article
ISSN
0022-247X

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## a b s t r a c t In this paper, we rigorously show the existence of multiple positive periodic solutions for a system of the first order nonautonomous differential equations in the form of The proof relies on some analytical techniques and coincidence degree theory. As an application, we study t