| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4620227 | Journal of Mathematical Analysis and Applications | 2009 | 8 Pages |
Abstract
We consider perturbations of the parallel flows on each invariant sphere by homogeneous polynomials of degree , and obtain the least upper bound of the number of limit cycles appearing on the sphere by using the Poincaré map and the averaging method.
Related Topics
Physical Sciences and Engineering
Mathematics
Analysis
