由凸集分离定理及终端时间阈值函数方程，我们获得了最大值原理及最优控制时间的确定方法。

Using separation theorem of convex set and the time terminal value function equation, we obtain the determining method of optimal terminal time as well as the Maximum principle.

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引进了相对内部，应用凸集分离定理建立了一个广义凸集值映射的择一性定理。

Then relative interior is introduced and an alternative theorem of generalized convex set-valued maps is established by using the separation theorem.

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