语法的强等价和弱等价以及相关的句子计数、句法结构数和结构歧义的若干定理
어법적강등개화약등개이급상관적구자계수、구법결구수화결구기의적약간정리
Equivalence, Weak Equivalence, Strong Equivalence of Linguistics, and Theorem on Counting of Sentences and Sentence Structure, Sentence Ambiguity
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