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- W2373845742 abstract "A class of cubic system with two imaginary invariant line x'=y(1+x~2),y'= -x+δy+nx~2+mxy+ly~2+bxy~2 is studied.The character of the critical point is studied and the successive focal values w_0=δ,w_1=m(n+l),w_2=-mn(b-1)are obtained.It is proved that if w_0=w_1=w_2=0,then O is a center.It is also proved that the system has no limit cycles when w_0=0,w_1w_2≥0,and has at most one limit cycle when w_0=0,w_1w_20." @default.
- W2373845742 created "2016-06-24" @default.
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- W2373845742 date "2009-01-01" @default.
- W2373845742 modified "2023-09-25" @default.
- W2373845742 title "Limit cycle for a class of cubic system with two imaginary invariant lines" @default.
- W2373845742 hasPublicationYear "2009" @default.
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