Authors
Citation
Yq. Ye, BIFURCATION-THEORY OF QUADRATIC DIFFERENTIAL-SYSTEMS, Chinese annals of mathematics. Ser. B, 14(4), 1993, pp. 427-434
Citations number
5
Categorie Soggetti
Mathematics, General",Mathematics
Journal title
ISSN journal
02529599
Volume
14
Issue
4
Year of publication
1993
Pages
427 - 434
Database
ISI
SICI code
0252-9599(1993)14:4<427:BOQD>2.0.ZU;2-H
Abstract
This paper deals with the number of limit cycles and bifurcation probl
em of quadratic differential systems. Under conditions a < 0, b + 2l >
0, l + 1 < 0, the author draws three bifurcation diagrams of the syst
em (1.18) below in the (delta, m) plane, which show that the maximum n
umber of limit cycles around a focus is two in this case.