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Weak Centers for
Reversible Cubic Systems
Weinian Zhang, Xiaorong Hou,
Zhenbing Zeng
Centre for Mathematical Sciences
CICA, Academia Sinica
Chengdu 610041, P.R. CHINA
zeng@ntr.cdb.ac.cn
Abstract
Unlike Chicone and Jacob's consideration
in quadratic case and unlike Rousseau
and Toni's inhomogenous case, the
problem of weak centers for general
cubic differential systems involves
too much complicated polynomials.
In this paper, we analyze reversible
cubic systems using Maple V.2 on Pentium/75
PC for its weak center and local bifurcation
of critical period.
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