
一类七次多项式微分系统的中心条件与赤道极限环分支
Center Conditions and Bifurcation of Limit Cycles at the Equatorin a Class of Seven Degree Polynomial Differential System
七次多项式系统 / 无穷远点 / 焦点量 / 奇点量 / 极限环分支. {{custom_keyword}} /
Polynomial system of degree seven / infinity / singular point quantity / bifurcation of limit cycle. {{custom_keyword}} /
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