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On the existence of periodic solutions for second order vector differential equations

โœ Scribed by H.-W Knobloch


Publisher
Elsevier Science
Year
1970
Tongue
English
Weight
914 KB
Volume
9
Category
Article
ISSN
0022-0396

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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