Chinese Quarterly Journal of Mathematics ›› 1987, Vol. 2 ›› Issue (2): 102-107.
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Abstract: 对于一阶常微分方程的初值问题如果 f（x,y）的某闭域 D 上连续,由初值问题（A）的解的基本存在定理,（A）在 x0的邻域内有连续解存在,且当这个解的图形之左右端点仍为该域的内点时,还可将此解在 D 内向左右两方延拓而扩大解的存在范围。但按通常的延拓方法,即使
HU Shun-rong. Prolongation Theorem of Ordinary Differential Equation in Cloesed Domain[J]. Chinese Quarterly Journal of Mathematics, 1987, 2(2): 102-107.
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