Quadratic differential systems with complex conjugate invariant lines meeting at a finite point
Quadratic differential systems with complex conjugate invariant lines meeting at a finite point
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具有在有限点相交的复共轭不变线的二次微分系统
DOI:
10.1016/j.jde.2018.05.014
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发表时间:
2018-10
影响因子:
2.4
通讯作者:
Zhang Xiang
中科院分区:
文献类型:
--
作者:
Schlomiuk Dana;Zhang Xiang
In this article we study the class QS2cIL of quadratic differential systems with two complex conjugate invariant lines meeting at a finite point. From the literature we know that quadratic systems with invariant lines of total multiplicity at least four or with the line at infinity filled up with singularities are integrable via the method of Darboux and hence they have no limit cycles. These could only occur if we have only the two complex lines, and the line at infinity, all simple. We first find all integrable systems in QS2cIL due to the presence of invariant lines. We next indicate a gap in the 1986 proof of Suo and Chen that systems in QS2cIL have at most one limit cycle and we give a complete proof of this result. Finally we give the topological classification of QS2cIL yielding 22 phase portraits three of which with a limit cycle.
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影响因子:
1.4
作者:
D. Schlomiuk;N. Vulpe
通讯作者:
D. Schlomiuk;N. Vulpe
影响因子:
2.4
作者:
Joan C. Artés;J. Llibre;N. Vulpe
通讯作者:
Joan C. Artés;J. Llibre;N. Vulpe
影响因子:
0.6
作者:
Joan C. Artés;B. Grünbaum;J. Llibre
通讯作者:
Joan C. Artés;B. Grünbaum;J. Llibre
DOI:
10.1142/s0218127415501503
发表时间:
2015-10
期刊:
Int. J. Bifurc. Chaos
影响因子:
--
作者:
O. Diaconescu;D. Schlomiuk;N. Vulpe
通讯作者:
O. Diaconescu;D. Schlomiuk;N. Vulpe
DOI:
10.21236/ada231940
发表时间:
1988-04
期刊:
--
影响因子:
--
作者:
C. Hoffmann
通讯作者:
C. Hoffmann