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FOCAL QUANTITIES AND BIFURCATION OFLIMIT CYCLES FOR E~1_3 SYSTEM |
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| Abstract: | In this paper, we discuss focal quantities and bifurcation of limit cycles forE~1_3 systems. By means of the algorithm designed in l] and by computing, weanalyse completely the conditions for the origin being a center and the orderof the origin being a fine focus in the both cases of B/0 and B= 0 for E~1_3systems. |
| Keywords: | quantities limit cycles E~1_3 systems |