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如果我有这样的语言:
L1 = {a^128 b^na^n | n >= 0}
我必须证明它不是正则的,是否足以证明 b^na^n 不是正则的,因此整个表达式不是正则的,因为 a^128 是有限的?
是的,因为正则语言在右商和左商下是封闭的,并且有限语言是正则的。