摘要
本文应用有限光滑正规形理论,对可积系统的多角环S(2),在小扰动下,当满足一定的非退化条件时。证明其环性为2。
By means of finitely-smooth normal form theory, it is proved that the cyclicity of polycycle S(2) of integrable systems with small perturbations under nondegenerate condition is two.
出处
《数学进展》
CSCD
北大核心
1999年第1期29-40,共12页
Advances in Mathematics(China)