
方程(dx/dt)=x~n+sum from i=0 to (n-1) a_i(t)x~2的闭解的个数及存在的条件
李今明
应用数学学报 ›› 1997, Vol. 20 ›› Issue (1) : 0-0.
方程(dx/dt)=x~n+sum from i=0 to (n-1) a_i(t)x~2的闭解的个数及存在的条件
THE CONDITIONS OF EXISTENCE AND THE NUMBER FOR THE CLOSED SOLUTIONS OF THE EQUATION ■
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