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On the existence of periodic solutions in general two-dimensional differential systems

โœ Scribed by Roger M Cooper


Book ID
107800153
Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
692 KB
Volume
40
Category
Article
ISSN
0022-247X

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On the existence of positive periodic so
โœ Xiong Li; Ziheng Zhang ๐Ÿ“‚ Article ๐Ÿ“… 2011 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 117 KB

## Abstract In this paper, we establish several criteria for the existence, multiplicity, nonexistence of positive periodic solutions of the following system by combining some new properties of Green's function together with Krasnosel'skฤญ fixed point theorem on the compression and expression of co