| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4619366 | Journal of Mathematical Analysis and Applications | 2010 | 9 Pages |
Abstract
In the present paper, we give an elementary proof for the result of Li et al. (2003) [6] about nonexistence of formal first integrals for periodic systems in a neighborhood of a constant solution. Moreover, we present a criterion about partial existence of formal first integrals for the periodic system, by using the Floquet's theory.
Related Topics
Physical Sciences and Engineering
Mathematics
Analysis
