Research Article
Limit Cycles and Invariant Curves in a Class of Switching Systems with Degree Four
Table 1
The maximum number of small limit cycles around the origin for different parameter c.
| Parameter c | The maximum number of small limit cycle around the origin |
| | 6 | | 7 | -2.09067 | 8 | | 7 | -1.94278 | 8 | | 7 | -0.7632018 | 8 | | 7 | | 6 | | 7 | | 6 | | 7 | 0 | 3 | | 7 | | 6 | (0.129745,0.581824) | 7 | 0.581824 | 8 | (0.581824,0.707107] | 7 | (0.707107,) | 6 |
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