摘要
In this paper, we investigate the calculation method of focal values for E13systems. By means of Poincare method and Wu elimination, we design a special algorithm to calculate focal values for E13 systems and obtain some satisfactory results on analysing the number of limit cycles for E13 systems.
In this paper, we investigate the calculation method of focal values for E13systems. By means of Poincare method and Wu elimination, we design a special algorithm to calculate focal values for E13 systems and obtain some satisfactory results on analysing the number of limit cycles for E13 systems.
