区分两个确定性CFG的常规语言


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假设您获得了两个确定性下推自动机,它们可以识别语言和,并希望确定是否存在规则语言,使得和。基本上,挑战在于确定DFA是否可以识别给定字符串来自两种语言中的哪一种,因为它来自这些语言之一。ABRARRB=

这可以决定吗?如果是这样,那么复杂度是多少?可以明确构造DFA吗?

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