| 1. | Limit cycle problem for a non - li 233 ; nard type cubic system
型方程周期解的存在性 |
| 2. | A class of cubic systems with one order ' s fine focus
一类具有一阶细焦点的三次系统 |
| 3. | The global structure and bifurcation for a class of cubic system
一类三次系统的全局结构和分支 |
| 4. | Study on a class of cubic system with algebraic solutions
一类具有抛物线解的三次系统的定性研究 |
| 5. | On the number and distributions of limit cycles in a cubic system
一类三次系统极限环的个数与分布 |
| 6. | A new algorithms and matrix simplification of a center - focus cubic system
焦点型全三次系统参数化简与新矩阵法 |
| 7. | In this paper , the problem of limit cycle for a cubic system is studied
摘要讨论三次系统(方程式略)的极限环问题。 |
| 8. | In chapter 3 , the stability and bifurcation of the equator of a cubic system are investigated
在第三章中，我们研究一类三次系统的赤道环的稳定性和极限环分支问题。 |
| 9. | The sufficient conditions for the non - existence , existence and uniqueness of limit cycle are obtained for the cubic system
得到了该系统不存在极限环和存在惟一极限环的条件。 |
| 10. | By translating this real cubic system into a complex planar system , an applicable linear algebraic recursion formula of the equator and the first 6 quantities of the equator are given
将这类实三次系统转化为复平面系统研究，给出了系统赤道环量的易于计算的线性代数递推公式。 |
