The problem of the commutative equivalence of context-free and regular languages is studied. Conditions ensuring that a context-free language of exponential growth is commutatively equivalent with a regular language are investigated.

中文翻译：

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论代数形式级数与语言的交换等价性

研究了上下文无关语言和正则语言的交换等价问题。研究了确保指数增长的上下文无关语言与常规语言可交换等价的条件。